Document and Entity Information	3 Months Ended
Document and Entity Information	Mar. 31, 2015	May 05, 2015
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Entity Registrant Name	Viper Energy Partners LP
Entity Central Index Key	0001602065
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Units, Units Outstanding		79,708,888
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes

Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 9,821	$ 15,110
Restricted Cash and Investments, Current	500	500
Royalty income receivable	7,084	8,239
Other current assets	492	253
Total current assets	17,897	24,102
Oil and natural gas interests, based on the full cost method of accounting ($91,444 and $160,302 excluded from depletion at December 31, 2014 and December 31, 2013, respectively)	510,999	511,085
Accumulated depletion	(41,700)	(32,800)
Oil and natural gas interests, net	469,299	478,285
Other assets	34,950	35,015
Total assets	522,146	537,402
Current liabilities:
Accounts Payable, Current	6	6
Other accrued liabilities	695	2,045
Total current liabilities	701	2,051
Commitments and contingencies
Unitholders’ equity:
Common units (79,708,888 units issued and outstanding as of December 31, 2014)	521,445	535,351
Total unitholders’ equity/members’ equity	521,445	535,351
Total liabilities and unitholders’ equity/members’ equity	$ 522,146	$ 537,402

Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified

Mar. 31, 2015

Dec. 31, 2014

Dec. 31, 2013

Statement of Financial Position [Abstract]

Oil and natural gas interests, based on the full cost method of accounting, amount excluded from depletion

$ 75,266

$ 91,444

^[1]

$ 160,302

Common units issued

79,708,888

Common units outstanding

79,708,888

[1]	See Note 1 for information regarding the basis of financial statement presentation.

Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Royalty income	$ 16,545	$ 15,853
Costs and expenses:
Production and ad valorem taxes	1,328	921
Depletion	8,901	5,567
General and administrative expenses	1,427	66
General and administrative expenses—related party	125	78
Total costs and expenses	11,781	6,632
Income from operations	4,764	9,221
Other income (expense)
Interest expense	(168)	0
Interest expense—related party, net of capitalized interest	0	(5,368)
Other income (expense)	486	0
Total other income (expense), net	318	(5,368)
Net income	$ 5,082	$ 3,853
Net income attributable to common limited partners per unit:
Basic (dollars per unit)	$ 0.06
Diluted (dollars per unit)	$ 0.06
Weighted average number of limited partner units outstanding
Basic (in units)	79,708
Diluted (in units)	79,711

Statement of Consolidated Unitholders' Equity and Members' Equity (USD $) In Thousands, unless otherwise specified	Total	Limited Partner [Member]	Members' Equity [Member] Predecessor [Member]	Diamondback Limited Partner [Member]
Partners' capital at Dec. 31, 2013	$ 2,988		$ 2,988
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	3,853		3,853
Partners' capital at Mar. 31, 2014	6,841		6,841
Partners' capital at Dec. 31, 2014	535,351
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	5,082	5,082
Unit-based compensation	939	939
vnom_LimitedPartnersCapitalAccountDistributionAmount-RelatedParty				(17,612)
vnom_LimitedPartnersCapitalAccountDistributionAmount	(2,315)	(2,315)
Partners' capital at Mar. 31, 2015	$ 521,445	$ 521,445	$ 0

Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$ 5,082	$ 3,853
Adjustments to reconcile net income to net cash provided by operating activities:
Depletion	8,901	5,567
Amortization of debt issuance costs	65	0
Unit-based compensation expense	939	0
Changes in operating assets and liabilities:
Royalty income receivable	1,155	2,795
Other current assets	0	(5,828)
Accounts payable—related party	(1,349)	156
Accounts payable and other accrued liabilities	(240)	0
Net cash provided by operating activities	14,553	6,543
Cash flows from investing activities:
Additions to oil and natural gas interests	0	(6,878)
Payments for (Proceeds from) Other Investing Activities	85	0
Net cash used in investing activities	85	(6,878)
Cash flows from financing activities
Public offering costs	0	(28)
Distribution to Diamondback	(19,927)	0
Net cash provided by financing activities	(19,927)	(28)
Net increase in cash	(5,289)	(363)
Cash at beginning of period	15,110	762
Cash and cash equivalents at end of period	9,821	399
Supplemental disclosure of cash flow information:
Interest paid, net of capitalized interest	103	11,109
Supplemental disclosure of non—cash transactions:
Capitalized interest	$ 0	$ 2,927

Organization and Basis of Presentation	3 Months Ended
Organization and Basis of Presentation	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Basis of Presentation	ORGANIZATION AND BASIS OF PRESENTATION Organization Viper Energy Partners LP (the “Partnership”) is a publicly traded Delaware limited partnership, the common units of which are listed on the NASDAQ Global Market under the symbol “VNOM”. The Partnership was formed by Diamondback Energy, Inc., a Delaware corporation (together with its subsidiaries, “Diamondback”), on February 27, 2014 to, among other things, own, acquire and exploit oil and natural gas properties in North America. The Partnership is currently focused on oil and natural gas properties in the Permian Basin. Unless the context requires otherwise, references to “we,” “us,” “our,” or “the Partnership” are intended to mean the business and operations of Viper Energy Partners LP and its consolidated subsidiary, Viper Energy Partners LLC (the “Predecessor”), a Delaware limited liability company. Prior to the completion on June 23, 2014 of the Partnership’s initial public offering (the “IPO”) of 5,750,000 common units representing limited partner interests (which included 750,000 common units issued pursuant to an option to purchase additional common units granted to the underwriters), Diamondback owned all of the general and limited partner interests in the Partnership. On June 23, 2014, the Partnership completed its IPO at a price to the public of $26.00 per common unit. The Partnership received net proceeds of approximately $137.2 million from the sale of these common units, net of offering expenses and underwriting discounts and commissions. In connection with the IPO, Diamondback contributed all of the membership interests in the Predecessor to the Partnership in exchange for 70,450,000 common units, and Viper Energy Partners GP LLC (the “General Partner”), a Delaware limited liability company, maintained its non-economic general partner interest. In addition, in connection with the closing of the IPO, the Partnership agreed to distribute to Diamondback all cash and cash equivalents and the royalty income receivable on hand in the aggregate amount of approximately $11.6 million and the net proceeds from the IPO. As of December 31, 2014, the Partnership had distributed $148.8 million to Diamondback as part of the IPO transactions. The contribution of the Predecessor to the Partnership was accounted for as a combination of entities under common control with assets and liabilities transferred at their carrying amounts in a manner similar to a pooling of interests. On September 19, 2014, the Partnership completed an underwritten public offering of 3,500,000 common units. The common units were sold to the public at $28.50 per unit and the Partnership received net proceeds of approximately $94.8 million from the sale of these common units, net of offering expenses and underwriting discounts and commissions. As of March 31 2015, the General Partner held a 100% non-economic general partner interest in the Partnership and Diamondback had an approximate 88.4% limited partner interest in the Partnership. Diamondback owns and controls the General Partner. Basis of Presentation The consolidated results of operations following the completion of the IPO are presented together with the results of operations pertaining to the Predecessor. The assets of the Predecessor consisted of mineral interests in oil and natural gas properties in the Permian Basin, which were acquired on September 19, 2013. See Note 3—Acquisitions. The contribution of the Predecessor to the Partnership on June 17, 2014 was accounted for as a combination of entities under common control with assets and liabilities transferred at their carrying amounts in a manner similar to a pooling of interests. The Partnership did not own any assets prior to June 17, 2014, the date of the contribution agreement by and among Diamondback, the Predecessor, the General Partner and the Partnership. Prior to the IPO, the Predecessor was a wholly owned subsidiary of Diamondback. For periods prior to June 17, 2014, the accompanying consolidated financial statements and related notes thereto represent the financial position, results of operations, cash flows and changes in members’ equity of the Predecessor and, for periods on and after June 17, 2014, the accompanying consolidated financial statements and related notes thereto represent the financial position, results of operations, cash flows and changes in partners’ equity of the Partnership and its wholly owned subsidiary. The accompanying consolidated financial statements and related notes thereto were prepared in conformity with accounting principles generally accepted in the United States (“GAAP”). All material intercompany balances and transactions are eliminated in consolidation.

- Definition

The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.

+ References+ Details

Summary of Significant Accounting Policies	3 Months Ended
Summary of Significant Accounting Policies	Mar. 31, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Use of Estimates Certain amounts included in or affecting the Partnership’s financial statements and related disclosures must be estimated by management, requiring certain assumptions to be made with respect to values or conditions that cannot be known with certainty at the time the financial statements are prepared. These estimates and assumptions affect the amounts the Partnership reports for assets and liabilities and the Partnership’s disclosure of contingent assets and liabilities at the date of the financial statements. The Partnership evaluates these estimates on an ongoing basis, using historical experience, consultation with experts and other methods the Partnership considers reasonable in the particular circumstances. Nevertheless, actual results may differ significantly from the Partnership’s estimates. Any effects on the Partnership’s business, financial position or results of operations resulting from revisions to these estimates are recorded in the period in which the facts that give rise to the revision become known. Significant items subject to such estimates and assumptions include estimates of proved oil and natural gas reserves and related present value estimates of future net cash flows therefrom, the carrying value of oil and natural gas properties and unit–based compensation. New Accounting Pronouncements In May 2014, the Financial Accounting Standards Board issued Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers”. ASU 2014-09 supersedes most of the existing revenue recognition requirements in GAAP and requires (i) an entity to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services and (ii) requires expanded disclosures regarding the nature, amount, timing, and certainty of revenue and cash flows from contracts with customers. The standard will be effective for annual and interim reporting periods beginning after December 15, 2016, with early application not permitted. The standard allows for either full retrospective adoption, meaning the standard is applied to all periods presented in the financial statements, or modified retrospective adoption, meaning the standard is applied only to the most current period presented. The Partnership is currently evaluating the impact, if any, that the adoption of ASU 2014-09 will have on the Partnership’s financial position, results of operations, and liquidity. In April 2015, the Financial Accounting Standards Board issued ASU 2015-03, “Interest—Imputation of Interest”. ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from that debt liability, consistent with the presentation of a debt discount to simplify the presentation of debt issuance costs. The standard will be effective for financial statements issued for fiscal years beginning after December 15, 2015, and interim periods within fiscal years beginning after December 15, 2016. Early application will be permitted for financial statements that have not previously been issued.

- Definition

The entire disclosure for all significant accounting policies of the reporting entity.

+ References+ Details

Oil and Natural Gas Interests

3 Months Ended

Mar. 31, 2015

Extractive Industries [Abstract]

Oil and Natural Gas Interests

OIL AND NATURAL GAS INTERESTS

Oil and natural gas interests include the following:




	March 31,			December 31,
	2015			2014

	(in thousands)
Oil and natural gas interests:
Subject to depletion	$	435,733		$	419,641
Not subject to depletion—acquisition costs
Incurred in 2014	47,314			48,266
Incurred in 2013	27,952			43,178
Total not subject to depletion	75,266			91,444

Gross oil and natural gas interests	510,999			511,085
Less accumulated depletion	(41,700		)	(32,800		)
Oil and natural gas interests, net	$	469,299		$	478,285

Costs associated with unevaluated properties are excluded from the full cost pool until a determination as to the existence of proved reserves is able to be made. The inclusion of the Partnership’s unevaluated costs into the amortization base is expected to be completed within three to five years.

Debt

3 Months Ended

Mar. 31, 2014

Debt Disclosure [Abstract]

Debt

DEBT

Credit Agreement-Wells Fargo Bank

On July 8, 2014, the Partnership entered into a secured revolving credit agreement with Wells Fargo Bank, National Association, or Wells Fargo, as the administrative agent, sole book runner and lead arranger. The credit agreement, which was amended August 15, 2014 to add additional lenders to the lending group, provides for a revolving credit facility in the maximum amount of $500.0 million, subject to scheduled semi-annual and other elective collateral borrowing base redeterminations based on the Partnership’s oil and natural gas reserves and other factors (the “borrowing base”). The borrowing base is scheduled to be re-determined semi-annually with effective dates of April 1st and October 1st. In addition, the Partnership may request up to three additional redeterminations of the borrowing base during any 12-month period. As of March 31, 2015, the borrowing base was set at $110.0 million. The Partnership had no outstanding borrowings as of March 31, 2015.

The outstanding borrowings under the credit agreement bear interest at a rate elected by the Partnership that is equal to an alternative base rate (which is equal to the greatest of the prime rate, the Federal Funds effective rate plus 0.5% and 3-month LIBOR plus 1.0%) or LIBOR, in each case plus the applicable margin. The applicable margin ranges from 0.5% to 1.50% in the case of the alternative base rate and from 1.50% to 2.50% in the case of LIBOR, in each case depending on the amount of the loan outstanding in relation to the borrowing base. The Partnership is obligated to pay a quarterly commitment fee ranging from 0.375% to 0.500% per year on the unused portion of the borrowing base, which fee is also dependent on the amount of the loan outstanding in relation to the borrowing base. Loan principal may be optionally repaid from time to time without premium or penalty (other than customary LIBOR breakage), and is required to be paid (a) if the loan amount exceeds the borrowing base, whether due to a borrowing base redetermination or otherwise (in some cases subject to a cure period) and (b) at the maturity date of July 8, 2019. The loan is secured by substantially all of the assets of the Partnership and its subsidiary.

The credit agreement contains various affirmative, negative and financial maintenance covenants. These covenants, among other things, limit additional indebtedness, additional liens, sales of assets, mergers and consolidations, dividends and distributions, transactions with affiliates and entering into certain swap agreements and require the maintenance of the financial ratios described below.



Financial Covenant			Required Ratio
Ratio of total debt to EBITDAX			Not greater than 4.0 to 1.0
Ratio of current assets to liabilities, as defined in the credit agreement			Not less than 1.0 to 1.0
EBITDAX will be annualized beginning with the quarter ended September 30, 2014 and ending with the quarter ending March 31, 2015

The covenant prohibiting additional indebtedness allows for the issuance of unsecured debt of up to $250.0 million in the form of senior unsecured notes and, in connection with any such issuance, the reduction of the borrowing base by 25% of the stated principal amount of each such issuance. A borrowing base reduction in connection with such issuance may require a portion of the outstanding principal of the loan to be repaid.

The lenders may accelerate all of the indebtedness under the Partnership’s credit agreement upon the occurrence and during the continuance of any event of default. The credit agreement contains customary events of default, including non-payment, breach of covenants, materially incorrect representations, cross-default, bankruptcy and change of control. There are no cure periods for events of default due to non-payment of principal and breaches of negative and financial covenants, but non-payment of interest and breaches of certain affirmative covenants are subject to customary cure periods.

Subordinated Note

Effective September 19, 2013, the Predecessor issued a subordinated note to Diamondback for the principal sum of $440.0 million for a royalty interest acquisition. In connection with the IPO, the subordinated note was converted to equity. The note bore interest at 7.625% per annum. Interest was due and payable monthly in arrears on the first business day of each calendar month. The unpaid principal balance and all accrued interest on the note were due and payable in full on October 1, 2021. Any indebtedness evidenced by this note was subordinate in the right of payment to any indebtedness outstanding under the Diamondback credit agreement. As of March 31, 2014, there was $444.1 million of principal and interest outstanding under this note.

Related Party Transactions	3 Months Ended
Related Party Transactions	Mar. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions	RELATED PARTY TRANSACTIONS Partnership Agreement In connection with the closing of the IPO, the General Partner and Diamondback entered into the first amended and restated agreement of limited partnership (the “Partnership Agreement”), dated June 23, 2014. The Partnership Agreement requires the Partnership to reimburse the General Partner for all direct and indirect expenses incurred or paid on the Partnership’s behalf and all other expenses allocable to the Partnership or otherwise incurred by the General Partner in connection with operating the Partnership’s business. The Partnership Agreement does not set a limit on the amount of expenses for which the General Partner and its affiliates may be reimbursed. These expenses include salary, bonus, incentive compensation and other amounts paid to persons who perform services for the Partnership or on the Partnership’s behalf and expenses allocated to the General Partner by its affiliates. The General Partner is entitled to determine the expenses that are allocable to the Partnership. For the three months ended March 31, 2015, no expenses were allocated to the Partnership by the General Partner. At March 31, 2015, the Partnership had no outstanding amounts payable to the General Partner. Advisory Services Agreement In connection with the closing of the IPO, the Partnership and General Partner entered into an advisory services agreement (the “Advisory Services Agreement”) with Wexford Capital LP (“Wexford”), Diamondback’s equity sponsor, dated as of June 23, 2014, under which Wexford provides the Partnership and the General Partner with general financial and strategic advisory services related to the Partnership’s business in return for an annual fee of $500,000, plus reasonable out-of-pocket expenses. The Advisory Services Agreement has a term of two years commencing on June 23, 2014, and will continue for additional one-year periods unless terminated in writing by either party at least ten days prior to the expiration of the then current term. It may be terminated at any time by either party upon 30 days prior written notice. In the event the Partnership terminates the Advisory Services Agreement, the Partnership is obligated to pay all amounts due through the remaining term. In addition, the Partnership has agreed to pay Wexford to-be-negotiated market-based fees approved by the conflict committee of the board of directors of the General Partner for such services as may be provided by Wexford at the Partnership’s request in connection with future acquisitions and divestitures, financings or other transactions in which the Partnership may be involved. The services provided by Wexford under the Advisory Services Agreement do not extend to the Partnership’s day-to-day business or operations. The Partnership has agreed to indemnify Wexford and its affiliates from any and all losses arising out of or in connection with the Advisory Services Agreement except for losses resulting from Wexford’s or its affiliates’ gross negligence or willful misconduct. For the three months ended March 31, 2015, we incurred costs of $125,000, under the Advisory Services Agreement. At March 31, 2015, there were no outstanding amounts payable by the Partnership to Wexford. Tax Sharing In connection with the closing of the IPO, the Partnership entered into a tax sharing agreement (the “Tax Sharing Agreement”) with Diamondback pursuant to which the Partnership will reimburse Diamondback for its share of state and local income and other taxes for which the Partnership’s results are included in a combined or consolidated tax return filed by Diamondback with respect to taxable periods including or beginning on June 23, 2014. The amount of any such reimbursement is limited to the tax the Partnership would have paid had it not been included in a combined group with Diamondback. Diamondback may use its tax attributes to cause its combined or consolidated group, of which the Partnership may be a member for this purpose, to owe less or no tax. In such a situation, the Partnership would reimburse Diamondback for the tax the Partnership would have owed had the tax attributes not been available or used for the Partnership’s benefit, even though Diamondback had no cash tax expense for that period. Shared Services Agreement Effective September 19, 2013, the Predecessor entered into a shared services agreement with Diamondback E&P LLC, a wholly-owned subsidiary of Diamondback. This agreement was terminated in connection with the IPO. Under this agreement, Diamondback E&P LLC provided consulting and administrative services to the Predecessor. The Predecessor incurred a monthly charge for the services of $26,000. For the three months ended March 31, 2014, the Partnership incurred costs under this agreement of $78,000. RELATED PARTY TRANSACTIONS Partnership Agreement In connection with the closing of the IPO, the General Partner and Diamondback entered into the first amended and restated agreement of limited partnership (the “Partnership Agreement”), dated June 23, 2014. The Partnership Agreement requires the Partnership to reimburse the General Partner for all direct and indirect expenses incurred or paid on the Partnership’s behalf and all other expenses allocable to the Partnership or otherwise incurred by the General Partner in connection with operating the Partnership’s business. The Partnership Agreement does not set a limit on the amount of expenses for which the General Partner and its affiliates may be reimbursed. These expenses include salary, bonus, incentive compensation and other amounts paid to persons who perform services for the Partnership or on the Partnership’s behalf and expenses allocated to the General Partner by its affiliates. The General Partner is entitled to determine the expenses that are allocable to the Partnership. For the three months ended March 31, 2015, no expenses were allocated to the Partnership by the General Partner. At March 31, 2015, the Partnership had no outstanding amounts payable to the General Partner. Advisory Services Agreement In connection with the closing of the IPO, the Partnership and General Partner entered into an advisory services agreement (the “Advisory Services Agreement”) with Wexford Capital LP (“Wexford”), Diamondback’s equity sponsor, dated as of June 23, 2014, under which Wexford provides the Partnership and the General Partner with general financial and strategic advisory services related to the Partnership’s business in return for an annual fee of $500,000, plus reasonable out-of-pocket expenses. The Advisory Services Agreement has a term of two years commencing on June 23, 2014, and will continue for additional one-year periods unless terminated in writing by either party at least ten days prior to the expiration of the then current term. It may be terminated at any time by either party upon 30 days prior written notice. In the event the Partnership terminates the Advisory Services Agreement, the Partnership is obligated to pay all amounts due through the remaining term. In addition, the Partnership has agreed to pay Wexford to-be-negotiated market-based fees approved by the conflict committee of the board of directors of the General Partner for such services as may be provided by Wexford at the Partnership’s request in connection with future acquisitions and divestitures, financings or other transactions in which the Partnership may be involved. The services provided by Wexford under the Advisory Services Agreement do not extend to the Partnership’s day-to-day business or operations. The Partnership has agreed to indemnify Wexford and its affiliates from any and all losses arising out of or in connection with the Advisory Services Agreement except for losses resulting from Wexford’s or its affiliates’ gross negligence or willful misconduct. For the three months ended March 31, 2015, we incurred costs of $125,000, under the Advisory Services Agreement. At March 31, 2015, there were no outstanding amounts payable by the Partnership to Wexford.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References+ Details

Unit-Based Compensation

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Unit-Based Compensation

UNIT–BASED COMPENSATION

On June 17, 2014, in connection with the IPO, the board of directors of the General Partner adopted the Viper Energy Partners LP Long Term Incentive Plan (“LTIP”), effective June 17, 2014, for employees, officers, consultants and directors of the General Partner and any of its affiliates, including Diamondback, who perform services for the Partnership. The LTIP provides for the grant of unit options, unit appreciation rights, restricted units, unit awards, phantom units, distribution equivalent rights, cash awards, performance awards, other unit-based awards and substitute awards. A total of 9,144,000 common units has been reserved for issuance pursuant to the LTIP. Common units that are cancelled, forfeited or withheld to satisfy exercise prices or tax withholding obligations will be available for delivery pursuant to other awards. The LTIP is administered by the board of directors of the General Partner or a committee thereof.

For the three months ended March 31, 2015, the Partnership incurred $0.9 million of unit–based compensation.

Unit Options

In accordance with the LTIP, the exercise price of unit options granted may not be less than the market value of the common units at the date of grant. The units issued under the LTIP will consist of new common units of the Partnership. On June 17, 2014, the Partnership granted 2,500,000 unit options to the executive officers of the General Partner. The unit options vest approximately 33% ratably on each of the next three anniversaries of the date of grant. In the event the fair market value per unit as of the exercise date is less than the exercise price per option unit, the vested options will automatically terminate and become null and void as of the exercise date.

The fair value of the unit options on the date of grant is expensed over the applicable vesting period. The Partnership estimates the fair values of unit options granted using a Black-Scholes option valuation model, which requires the Partnership to make several assumptions. At the time of grant the Partnership did not have a history of market prices, thus the expected volatility was determined using the historical volatility for a peer group of companies. The expected term of options granted was determined based on the contractual term of the awards. The risk-free interest rate is based on the U.S. treasury yield curve rate for the expected term of the unit option at the date of grant. The expected dividend yield was based upon projected performance of the Partnership.



	2014
Grant-date fair value	$	4.24
Expected volatility	36.0		%
Expected dividend yield	5.9		%
Expected term (in years)	3.0
Risk-free rate	0.99		%

The following table presents the unit option activity under the LTIP for the three months ended March 31, 2015:



		Weighted Average
	Unit	Exercise		Remaining	Intrinsic
	Options	Price		Term	Value
				(in years)	(in thousands)
Outstanding at December 31, 2014	2,500,000	$	26.00
Granted	—	$	—
Outstanding at March 31, 2015	2,500,000	$	26.00	2.22	$	—

Vested and Expected to vest at March 31, 2015	2,500,000	$	26.00	2.22	$	—
Exercisable at March 31, 2015	—	$	—	—	$	—

As of March 31, 2015, the unrecognized compensation cost related to unvested unit options was $7.8 million. Such cost is expected to be recognized over a weighted-average period of 2.2 years.

Phantom Units

Under the LTIP, the board of directors of the General Partner is authorized to issue phantom units to eligible employees. The Partnership estimates the fair values of phantom units as the closing price of the Partnership’s common units on the grant date of the award, which is expensed over the applicable vesting period. Upon vesting the phantom unit entitles the recipient one common unit of the Partnership for each phantom unit.

The following table presents the phantom unit activity under the LTIP for the three months ended March 31, 2015:



		Weighted Average
	Phantom	Grant-Date
	Units	Fair Value
Unvested at December 31, 2014	17,776	$	19.51
Granted	—	$	—
Vested	—	$	—
Unvested at March 31, 2015	17,776	$	19.51

As of March 31, 2015, the unrecognized compensation cost related to unvested phantom units was $0.3 million. Such cost is expected to be recognized over a weighted-average period of 1.2 years.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

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Partners' Capital and Partnership Distributions

3 Months Ended

Mar. 31, 2015

Equity [Abstract]

Partners' Capital and Partnership Distributions

PARTNERS’ CAPITAL AND PARTNERSHIP DISTRIBUTIONS

The Partnership has general partner and common unit partnership interests. The general partner interest is a non-economic interest and is not entitled to any cash distributions.

At March 31, 2015, the Partnership had a total of 79,708,888 common units issued and outstanding, of which 70,450,000 common units were owned by Diamondback, representing approximately 88.4% of the total Partnership common units outstanding.

The following table summarizes changes in the number of the Partnership’s common units:



		Common Units

Diamondback Energy, Inc. ownership of common units		70,450,000
Common units issued in June 23, 2014 IPO		5,750,000
Common units issued in September 19, 2014 public offering		3,500,000
Common units vested and issued under the LTIP in 2014		8,888
Balance March 31, 2015		79,708,888

The board of directors of the General Partner has adopted a policy for the Partnership to distribute all available cash generated on a quarterly basis, beginning with the quarter ending September 30, 2014. On February 5, 2015, the board of directors of the General Partner approved a cash distribution attributable to the fourth quarter of 2014 of $0.25 per unit, which was paid on February 27, 2015. This distribution included a total of $17.6 million distributed to Diamondback. Cash distributions will be made to the common unitholders of record on the applicable record date, generally within 60 days after the end of each quarter. Available cash for each quarter will be determined by the board of directors of the General Partner following the end of such quarter. Available cash for each quarter will generally equal Adjusted EBITDA reduced for cash needed for debt service and other contractual obligations and fixed charges and reserves for future operating or capital needs that the board of directors of the General Partner deems necessary or appropriate, if any.

- Definition

The entire disclosure for the formation, structure, control and ownership of the partnership. Disclosures related to accounts comprising partners' capital. Includes balances of general partners' capital account, limited partners' capital account, preferred partners' capital account and total partners' capital account and units outstanding; accumulated other comprehensive income; amount and nature of changes to amount of partner's capital and units outstanding by class, rights and privileges for each class of units; distribution policies and distributions paid by unit class; impact of and correction of an error in previously issued financial statements; limitations of partners' liability; redemption, conversion and distribution policies; and deferred compensation related to the issuance of units.

+ References+ Details

Earnings Per Unit

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Earnings Per Unit

EARNINGS PER UNIT

The net income per common unit on the consolidated statements of operations is based on the net income of the Partnership for the three months ended March 31, 2015, since this is the amount of net income that is attributable to the Partnership’s common units.

The Partnership’s net income is allocated wholly to the common units as the General Partner does not have an economic interest. Payments made to the Partnership’s unitholders are determined in relation to the cash distribution policy described in Note 7—Partners’ Capital and Partnership Distributions.

Basic net income per common unit is calculated by dividing net income by the weighted-average number of common units outstanding during the period. Diluted net income per common unit gives effect, when applicable, to unvested common units granted under the LTIP.



			Three Months Ended March 31,
			2015

			(In thousands, except per unit amounts)
Net income			$5,082
Net income per common unit, basic			$0.06
Net income per common unit, diluted			$0.06
Weighted-average common units outstanding, basic			79,708
Weighted-average common units outstanding, diluted			79,711

- Definition

The entire disclosure for earnings per share.

+ References+ Details

Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES The Partnership could be subject to various possible loss contingencies which arise primarily from interpretation of federal and state laws and regulations affecting the natural gas and crude oil industry. Such contingencies include differing interpretations as to the prices at which natural gas and crude oil sales may be made, the prices at which royalty owners may be paid for production from their leases, environmental issues and other matters. Management believes it has complied with the various laws and regulations, administrative rulings and interpretations.

- Definition

The entire disclosure for commitments and contingencies.

+ References+ Details

Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2015
Accounting Policies [Abstract]
Use of Estimates	Use of Estimates Certain amounts included in or affecting the Partnership’s financial statements and related disclosures must be estimated by management, requiring certain assumptions to be made with respect to values or conditions that cannot be known with certainty at the time the financial statements are prepared. These estimates and assumptions affect the amounts the Partnership reports for assets and liabilities and the Partnership’s disclosure of contingent assets and liabilities at the date of the financial statements. The Partnership evaluates these estimates on an ongoing basis, using historical experience, consultation with experts and other methods the Partnership considers reasonable in the particular circumstances. Nevertheless, actual results may differ significantly from the Partnership’s estimates. Any effects on the Partnership’s business, financial position or results of operations resulting from revisions to these estimates are recorded in the period in which the facts that give rise to the revision become known. Significant items subject to such estimates and assumptions include estimates of proved oil and natural gas reserves and related present value estimates of future net cash flows therefrom, the carrying value of oil and natural gas properties and unit–based compensation.
New Accounting Pronouncements	New Accounting Pronouncements In May 2014, the Financial Accounting Standards Board issued Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers”. ASU 2014-09 supersedes most of the existing revenue recognition requirements in GAAP and requires (i) an entity to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services and (ii) requires expanded disclosures regarding the nature, amount, timing, and certainty of revenue and cash flows from contracts with customers. The standard will be effective for annual and interim reporting periods beginning after December 15, 2016, with early application not permitted. The standard allows for either full retrospective adoption, meaning the standard is applied to all periods presented in the financial statements, or modified retrospective adoption, meaning the standard is applied only to the most current period presented. The Partnership is currently evaluating the impact, if any, that the adoption of ASU 2014-09 will have on the Partnership’s financial position, results of operations, and liquidity. In April 2015, the Financial Accounting Standards Board issued ASU 2015-03, “Interest—Imputation of Interest”. ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from that debt liability, consistent with the presentation of a debt discount to simplify the presentation of debt issuance costs. The standard will be effective for financial statements issued for fiscal years beginning after December 15, 2015, and interim periods within fiscal years beginning after December 15, 2016. Early application will be permitted for financial statements that have not previously been issued.

Oil and Natural Gas Interests (Tables)

3 Months Ended

Mar. 31, 2015

Extractive Industries [Abstract]

Aggregate capitalized costs related to oil and natural gas production activities

Oil and natural gas interests include the following:




	March 31,			December 31,
	2015			2014

	(in thousands)
Oil and natural gas interests:
Subject to depletion	$	435,733		$	419,641
Not subject to depletion—acquisition costs
Incurred in 2014	47,314			48,266
Incurred in 2013	27,952			43,178
Total not subject to depletion	75,266			91,444

Gross oil and natural gas interests	510,999			511,085
Less accumulated depletion	(41,700		)	(32,800		)
Oil and natural gas interests, net	$	469,299		$	478,285

Unit-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of valuation assumptions



	2014
Grant-date fair value	$	4.24
Expected volatility	36.0		%
Expected dividend yield	5.9		%
Expected term (in years)	3.0
Risk-free rate	0.99		%

Schedule of unit option activity

The following table presents the unit option activity under the LTIP for the three months ended March 31, 2015:



		Weighted Average
	Unit	Exercise		Remaining	Intrinsic
	Options	Price		Term	Value
				(in years)	(in thousands)
Outstanding at December 31, 2014	2,500,000	$	26.00
Granted	—	$	—
Outstanding at March 31, 2015	2,500,000	$	26.00	2.22	$	—

Vested and Expected to vest at March 31, 2015	2,500,000	$	26.00	2.22	$	—
Exercisable at March 31, 2015	—	$	—	—	$	—

Partners' Capital and Partnership Distributions (Tables)

3 Months Ended

Mar. 31, 2015

Equity [Abstract]

Schedule of changes in common units

The following table summarizes changes in the number of the Partnership’s common units:



		Common Units

Diamondback Energy, Inc. ownership of common units		70,450,000
Common units issued in June 23, 2014 IPO		5,750,000
Common units issued in September 19, 2014 public offering		3,500,000
Common units vested and issued under the LTIP in 2014		8,888
Balance March 31, 2015		79,708,888

Supplemental Information on Oil and Natural Gas Operations (Unaudited) Supplemental Information on Oil and Natural Gas Operations (Unaudited) (Tables)

3 Months Ended

Mar. 31, 2015

Extractive Industries [Abstract]

Aggregate capitalized costs related to oil and natural gas production activities

Oil and natural gas interests include the following:




	March 31,			December 31,
	2015			2014

	(in thousands)
Oil and natural gas interests:
Subject to depletion	$	435,733		$	419,641
Not subject to depletion—acquisition costs
Incurred in 2014	47,314			48,266
Incurred in 2013	27,952			43,178
Total not subject to depletion	75,266			91,444

Gross oil and natural gas interests	510,999			511,085
Less accumulated depletion	(41,700		)	(32,800		)
Oil and natural gas interests, net	$	469,299		$	478,285

Organization and Basis of Presentation (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	0 Months Ended		0 Months Ended				0 Months Ended	3 Months Ended	6 Months Ended
	Mar. 31, 2015 General Partner [Member]	Jun. 23, 2014 IPO [Member] Limited Partner [Member]	Jun. 23, 2014 IPO [Member] Limited Partner [Member]	Jun. 23, 2014 Over-Allotment Option [Member] Limited Partner [Member]	Sep. 19, 2014 Public Offering [Member] Limited Partner [Member]	Sep. 19, 2014 Public Offering [Member] Limited Partner [Member]	Jun. 23, 2014 Diamondback Energy, Inc. [Member]	Jun. 23, 2014 Diamondback Energy, Inc. [Member] Limited Partner [Member]	Mar. 31, 2015 Diamondback Energy, Inc. [Member] Limited Partner [Member]	Dec. 31, 2014 Diamondback Energy, Inc. [Member] Limited Partner [Member]
Limited Partners' Capital Account [Line Items]
Units issued in public offering		5,750,000		750,000	3,500,000
Price per common unit (in dollars per unit)			$ 26.00			$ 28.5
Proceeds from sale of common units, net of offering expenses and underwriting discounts and commissions		$ 137.2			$ 94.8
Conversion of membership interests to common units								70,450,000
Distribution payable							11.6
vnom_DistributionToRelatedParty										$ 148.8
Percent of General Partner interest	100.00%
Percent of limited partnership interest									88.00%

Summary of Significant Accounting Policies - Oil and Natural Gas Properties, Capitalized Interest, and Debt Issuance Costs (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Accounting Policies [Abstract]
Depletion of oil and gas properties	$ 8,901	$ 5,567
Interest costs capitalized	$ 0	$ 2,927

Oil and Natural Gas Interests (Details) (USD $)
In Thousands, unless otherwise specified

3 Months Ended

Mar. 31, 2015

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Incurred in 2014 [Member]

Dec. 31, 2013

Incurred in 2014 [Member]

Dec. 31, 2014

Incurred in 2013 [Member]

Dec. 31, 2013

Incurred in 2013 [Member]

Mar. 31, 2015

Minimum [Member]

Mar. 31, 2015

Maximum [Member]

Property, Plant and Equipment [Line Items]

Subject to depletion

$ 419,641

$ 287,732

Total not subject to depletion

75,266

91,444

^[1]

160,302

48,266

43,178

160,302

Gross oil and natural gas interests

510,999

511,085

448,034

Less accumulated depletion

(41,700)

(32,800)

(5,199)

Oil and natural gas interests, net

$ 469,299

$ 478,285

$ 442,835

Number of years until unevaluated properties are included in full cost pool

3 years

5 years

[1]	See Note 1 for information regarding the basis of financial statement presentation.

Debt - Credit Facility (Details) (Wells Fargo [Member], Revolving Credit Agreement [Member], USD $)	3 Months Ended
	Mar. 31, 2015 redetermindation	Jul. 08, 2014
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 500,000,000
Number of additional redeterminations that may be requested	3
Period of redeterminations	12 months
Current borrowing capacity	110,000,000
Amount outstanding under credit facility	$ 0
Federal Funds Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
LIBOR, 3-month [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%
Minimum [Member]
Line of Credit Facility [Line Items]
Commitment fee on the unused portion of the borrowing base	0.375%
Minimum [Member] \| Base Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
Minimum [Member] \| LIBOR [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.50%
Maximum [Member]
Line of Credit Facility [Line Items]
Commitment fee on the unused portion of the borrowing base	0.50%
Maximum [Member] \| Base Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.50%
Maximum [Member] \| LIBOR [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.50%

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References+ Details

Debt - Financial Covenants (Details) (Wells Fargo [Member], Revolving Credit Agreement [Member], USD $)	Mar. 31, 2015	Dec. 31, 2014
Wells Fargo [Member] \| Revolving Credit Agreement [Member]
Line of Credit Facility [Line Items]
Ratio of total debt to EBITDAX, not greater than 4.0		4.0
Ratio of current assets to liabilities, not less than 1.0		1.0
Maximum issuance of unsecured debt	$ 250,000,000
Reduction of borrowing base	25.00%

Debt - Subordinated Note (Details) (Diamondback Energy, Inc. [Member], Subordinated Note [Member], USD $)	Sep. 19, 2013
Diamondback Energy, Inc. [Member] \| Subordinated Note [Member]
Debt Instrument [Line Items]
Principal amount	$ 440,000,000
Stated interest rate	7.625%

Fair Value Measurements (Details) (Wells Fargo [Member], Revolving Credit Agreement [Member], USD $)	Mar. 31, 2015
Wells Fargo [Member] \| Revolving Credit Agreement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Amount outstanding under credit facility	$ 0

- Definition

+ References+ Details

Related Party Transactions (Details) (USD $)	3 Months Ended		3 Months Ended	12 Months Ended	3 Months Ended	6 Months Ended
Related Party Transactions (Details) (USD $)	Mar. 31, 2015 General Partner [Member] Partnership Agreement [Member]	Dec. 31, 2014 General Partner [Member] Partnership Agreement [Member]	Mar. 31, 2015 Wexford [Member] Advisory Services Agreement [Member]	Dec. 31, 2014 Wexford [Member] Advisory Services Agreement [Member]	Dec. 31, 2013 Diamondback E&P LLC [Member] Shared Service Agreement [Member]	Jun. 22, 2014 Predecessor [Member] Diamondback E&P LLC [Member] Shared Service Agreement [Member]
Related Party Transaction [Line Items]
Advisory services agreement, annual fee			$ 500,000
Term of advisory services agreement			2 years
Renewal term of advisory services agreement			1 year
Minimum period for cancellation of additional one-year periods			10 days
Agreement termination, written notice period			30 days
Monthly expense for transaction with related party						26,000
Incurred costs for transactions with related party	0			125,000	78,000
Amounts owed to related party		$ 0		$ 0

- Definition

Amount for accounts payable to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References+ Details

Unit-Based Compensation - Additional Disclosures (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		3 Months Ended		0 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2015 LTIP [Member]	Jun. 17, 2014 LTIP [Member]	Jun. 17, 2014 Executive Officers of General Partner [Member] LTIP [Member]	Jun. 17, 2014 Unit Options [Member] Executive Officers of General Partner [Member] LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common units reserved for issuance				9,144,000
Equity-based compensation	$ 939
Unit options granted			0		2,500,000
Vesting percentage for next three anniversaries						33.00%
Unrecognized compensation cost related to unvested unit options		$ 7,822

Unit-Based Compensation - Valuation Assumptions (Details) (Unit Options [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Unit Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant-date fair value (in dollars per share)	$ 4.24
Expected volatility	36.00%
Expected dividend yield	5.90%
Expected term (in years)	3 years
Risk-free rate	0.99%

Unit-Based Compensation - Unit Option Activity (Details) (LTIP [Member], USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
LTIP [Member]
Number of Options
Outstanding at December 31, 2013 (units)	2,500,000
Granted (units)	0
Outstanding at September 30, 2014 (units)	2,500,000	2,500,000
Vested and Expected to vest at September 30, 2014 (units)	2,500,000
Exercisable at September 30, 2014 (units)	0
Weighted Average Exercise Price
Outstanding at December 31, 2013 (in dollars per unit)	$ 26.00
Granted (in dollars per unit)	$ 0.00
Outstanding at September 30, 2014 (in dollars per unit)	$ 26.00	$ 26.00
Vested and Expected to vest at September 30, 2014 (in dollars per unit)	$ 26.00
Exercisable at September 30, 2014 (in dollars per unit)	$ 0.00
Outstanding at end of period, remaining term		2 years 2 months 18 days
Vested and expected to vest at end of period, remaining term		2 years 2 months 18 days
Exercisable at end of period, remaining term	0 years
Outstanding at end of period, intrinsic value		$ 0
Vested and expected to vest at end of period, intrinsic value		0
Exercisable at end of period, intrinsic value		$ 0

Partners' Capital and Partnership Distributions (Details)			3 Months Ended			0 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2015 Cash Distribution [Member]	Mar. 31, 2015 Diamondback Energy, Inc. [Member] Limited Partner [Member]	Jun. 23, 2014 Diamondback Energy, Inc. [Member] Limited Partner [Member]	Jun. 23, 2014 IPO [Member] Limited Partner [Member]	Sep. 19, 2014 Public Offering [Member] Limited Partner [Member]
Limited Partners' Capital Account [Line Items]
Common units issued	79,708,888	79,708,888
Common units outstanding	79,708,888	79,708,888
Units of partnership interest				70,450,000	70,450,000
Units issued in public offering						5,750,000	3,500,000
Percent of limited partnership interest				88.00%
Cash distributions, distribution period after quarter end			60 days

Partners' Capital and Partnership Distributions Partnership Distributions (Details) (USD $)	3 Months Ended
	Dec. 31, 2014
Distribution Made to Limited Partner [Line Items]
Distribution Made to Limited Partner, Distributions Declared, Per Unit	$ 0.25

Earnings Per Unit (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Net income	$ 5,082	$ 3,853
Net income per common unit, basic (dollars per unit)	$ 0.06
Net income per common unit, diluted (dollars per unit)	$ 0.06
Weighted-average common units outstanding, basic	79,708
Weighted-average common units outstanding, diluted	79,711

Supplemental Information on Oil and Natural Gas Operations (Unaudited) Aggregate Capitalized Costs Related to Oil and Natural Gas Production Activities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Oil and natural gas interests:
Proved properties	$ 419,641	$ 287,732

Supplemental Information on Oil and Natural Gas Operations (Unaudited) Results of Operation from Oil and Natural Gas Producing Activities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Extractive Industries [Abstract]
Royalty income	$ 16,545	$ 15,853
Production and ad valorem taxes	(1,328)	(921)
Depletion of Oil and Gas Properties	$ (8,901)	$ (5,567)

Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS On May 1, 2015, the board of directors of the General Partner approved a cash distribution for the first quarter of 2015 of $0.19 per common unit, payable on May 22, 2015, to unitholders of record at the close of business on May 15, 2015.

Unit-Based Compensation Phantom Units (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 0.3

Subsequent Events (Details) (USD $)	3 Months Ended
Subsequent Events (Details) (USD $)	Dec. 31, 2014
Subsequent Event [Line Items]
Distribution Made to Limited Partner, Distributions Declared, Per Unit	$ 0.25