Long-Term Debt - Additional Information (Detail) - USD ($)		1 Months Ended	6 Months Ended		12 Months Ended
		Jan. 31, 2016	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Mar. 15, 2016
Debt Disclosure [Line Items]
Line of Credit Facility, Asset Restrictions		1			0.8
Applicable Margin Rate Increase						1.00%
Derivatives Settled to Pay Down Revolver			$ 51,979,000	$ 0
Repayments of Lines of Credit			5,468,000	$ 20,000,000
Line of Credit Facility, Maximum Borrowing Capacity			112,600,000
March 2016 [Domain]
Debt Disclosure [Line Items]
Derivatives Settled to Pay Down Revolver			22,900,000
May 2016 [Domain]
Debt Disclosure [Line Items]
Derivatives Settled to Pay Down Revolver			12,500,000
April 2016 [Domain]
Debt Disclosure [Line Items]
Derivatives Settled to Pay Down Revolver			16,600,000
Repayments of Lines of Credit			5,400,000
Revolving Credit Facility
Debt Disclosure [Line Items]
Borrowing base and revolving commitment			$ 114,420,000
Debt Instrument Interest Additional Interest Above Federal Fund Rate					0.50%
Debt Instrument, Description of Variable Rate Basis					one-month Adjusted LIBOR
Interest rate option two, base rate over one-month Adjusted LIBOR					1.00%
Interest rate option two, applicable margin rate			2.50%
Interest Rate at Period End			6.00%
Interest Rate at Period End, LIBOR component			3.50%
Line of Credit [Member] | Letter of Credit
Debt Disclosure [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 1,900,000
7.25% Senior Notes due 2019
Debt Disclosure [Line Items]
Senior Notes, Noncurrent			$ 300,000,000		$ 300,000,000
Annual interest rate			7.25%
8.50% Senior Notes due 2020
Debt Disclosure [Line Items]
Senior Notes, Noncurrent			$ 775,000,000		$ 775,000,000
Annual interest rate			8.50%
Maximum | Revolving Credit Facility
Debt Disclosure [Line Items]
Interest rate option one, applicable margin rate over Adjusted LIBOR					3.50%
Interest rate option two, applicable margin rate					2.50%
Maximum | Line of Credit [Member]
Debt Disclosure [Line Items]
Available borrowing capacity	[1]		$ 112,553,000
Minimum [Member] | Revolving Credit Facility
Debt Disclosure [Line Items]
Interest rate option one, applicable margin rate over Adjusted LIBOR					2.50%
Interest rate option two, applicable margin rate					1.50%

[1] Issuance costs attributable to the RBL, which represent costs attributable to the access to credit over the RBL’s contractual term, were presented as a component of Other assets (see Note 11) prior to the accelerated write-off in advance of our bankruptcy filing during the three months ended June 30, 2016.