Debt - Credit Facility - Additional Information (Detail) - USD ($)			12 Months Ended
	Nov. 01, 2016	Apr. 14, 2016	Dec. 31, 2016	Jan. 13, 2017	Dec. 22, 2016	Dec. 21, 2016	Dec. 01, 2016	Oct. 28, 2016	Apr. 13, 2016	Dec. 31, 2015
Line of Credit Facility [Line Items]
Debt covenant, cash distributions to equity holders, pro forma availability minimum		$ 75,000,000
Debt covenant, cash distributions to equity holders, borrowing base amount percentage prior threshold date		10.00%
Debt covenant, cash distributions to equity holders, borrowing base amount percentage after threshold date		15.00%
Debt covenant, cash distributions to equity holders, total debt to EBITDAX ratio minimum		400.00%
Debt covenant, maximum payment of cash distributions to equity holders amount		$ 4,150,000
Debt covenant, repurchase, pro forma availability minimum		$ 75,000,000
Debt covenant, repurchase, borrowing base amount percentage prior threshold date minimum		10.00%
Debt covenant, repurchase, borrowing base amount percentage after threshold date minimum		15.00%
Debt covenant, outstanding senior unsecured notes repurchase, total debt to EBITDAX ratio maximum		300.00%
Maximum amount of proceeds from swap liquidations, sale or other disposition of oil and gas properties to repurchase outstanding senior unsecured notes or second lien debt		$ 40,000,000
Maximum amount of sale and cash proceeds to repurchase outstanding senior unsecured notes aggregate		$ 60,000,000
Minimum Percentage of Oil and Gas Properties mortgaged as collateral security for the loans under the Credit Agreement		90.00%
Debt covenant, minimum aggregate amount of unrestricted cash or cash equivalents to prepay loans and cash collateralize letter of credit exposure		$ 25,000,000
Letters of credit outstanding			$ 2,400,000
OLLC $2.0 billion revolving credit facility, variable-rate, due March 2018
Line of Credit Facility [Line Items]
Revolving credit facility, maximum borrowing capacity			2,000,000,000							$ 2,000,000,000
Borrowing base		$ 925,000,000	$ 530,653,000		$ 530,700,000	$ 619,000,000	$ 720,000,000	$ 740,000,000	$ 1,175,000,000
Aggregate Liquidity								$ 30,000,000
Percentage of revolving unused commitment fee		0.50%
Consolidated First Lien Net Secured Debt to Consolidated EBITDAX ratio Maximum		325.00%
Description of debt default			Due to (i) the uncertainty regarding the Partnership’s ability to cure the default and event of default as discussed in Note 2, (ii) our inability to comply with certain financial covenants contained in our revolving credit facility and (iii) the default or cross default provisions in the indentures governing the 2021 Senior Notes and 2022 Senior Notes, the Partnership classified the outstanding revolving credit facility balance as a current liability on its balance sheet as of December 31, 2016.
Percentage of net cash proceeds from any asset sale, transfer or other disposition			100.00%
Percentage of Oil and Gas Properties subject to mortgage	95.00%
Minimum Percentage of Oil and Gas Properties mortgaged as collateral security for the loans under the Credit Agreement	92.00%	90.00%
OLLC $2.0 billion revolving credit facility, variable-rate, due March 2018 | Minimum [Member] | Alternative Base Rate [Member]
Line of Credit Facility [Line Items]
Base rate borrowing percentage		1.25%
OLLC $2.0 billion revolving credit facility, variable-rate, due March 2018 | Minimum [Member] | Eurodollar or LIBOR [Member]
Line of Credit Facility [Line Items]
Base rate borrowing percentage		2.25%
OLLC $2.0 billion revolving credit facility, variable-rate, due March 2018 | Maximum [Member] | Alternative Base Rate [Member]
Line of Credit Facility [Line Items]
Base rate borrowing percentage		2.25%
OLLC $2.0 billion revolving credit facility, variable-rate, due March 2018 | Maximum [Member] | Eurodollar or LIBOR [Member]
Line of Credit Facility [Line Items]
Base rate borrowing percentage		3.25%
OLLC $2.0 billion revolving credit facility, variable-rate, due March 2018 | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Borrowing base				$ 457,200,000
Issuance Of Secured Second Lien Notes Solely In Exchange Of Outstanding Senior Unsecured Notes
Line of Credit Facility [Line Items]
Debt instrument, redemption period		180 days
Period of consolidated net interest expense following the exchange		12 months
Issuance Of Secured Second Lien Notes Solely In Exchange Of Outstanding Senior Unsecured Notes | Maximum [Member]
Line of Credit Facility [Line Items]
Aggregate principal amount		$ 600,000,000
2021 Senior Notes [Member]
Line of Credit Facility [Line Items]
Description of debt default			The Partnership did not pay the interest due on the 2021 Senior Notes prior to the expiration of the 30-day grace period. Due to (i) the uncertainty regarding the Partnership’s ability to cure the default and event of default as discussed in Note 2, (ii) our inability to comply with certain financial covenants contained in our revolving credit facility and (iii) the default or cross default provisions in the indentures governing the 2021 Senior Notes and 2022 Senior Notes, the Partnership classified the outstanding balance of the senior notes as a current liability on its balance sheet as of December 31, 2016.
Interest payment grace period under indenture			30 days