Long-Term Debt - Additional Information (Detail) - USD ($)	1 Months Ended		3 Months Ended		12 Months Ended
	Apr. 30, 2016	Jan. 31, 2016	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	May. 01, 2016	Apr. 15, 2016	Apr. 12, 2016	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			$ 22,860,000	$ 0
Revolving Credit Facility
Debt Disclosure [Line Items]
Borrowing base and revolving commitment			$ 148,869,000						$ 171,800,000
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			3.50%
Commitment Fee Percentage at Period End			0.50%
Interest Rate at Period End			4.125%
Interest Rate at Period End, LIBOR component			0.625%
Revolving Credit Facility | Minimum
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%
Commitment fees for undrawn credit facility			0.375%
Covenant requirement - Current ratio			1.0
Revolving Credit Facility | Maximum
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%
Commitment fees for undrawn credit facility			0.50%
Revolving Credit Facility | Through March 31, 2016
Debt Disclosure [Line Items]
Covenant requirement - Debt to EBITDAX ratio			4.75
Revolving Credit Facility | Through June 30, 2016 (TTM)
Debt Disclosure [Line Items]
Covenant requirement - Debt to EBITDAX ratio			5.25
Revolving Credit Facility | Through December 31, 2016 (TTM)
Debt Disclosure [Line Items]
Covenant requirement - Debt to EBITDAX ratio			5.50
Revolving Credit Facility | Through March 31, 2017 (TTM)
Debt Disclosure [Line Items]
Covenant requirement - Debt to EBITDAX ratio			4.50
Revolving Credit Facility | Through maturity in September 2017 (TTM)
Debt Disclosure [Line Items]
Covenant requirement - Debt to EBITDAX ratio			4.0
Debt to EBITDAX Ratio that precludes the payment of cash dividends on preferred stock			5.0
Line of Credit [Member] | Maximum
Debt Disclosure [Line Items]
Available borrowing capacity			$ 147,065,000
Line of Credit [Member] | Through March 31, 2017 (TTM)
Debt Disclosure [Line Items]
Covenant requirement - Senior Secured Debt to EBITDAX ratio			2.75
7.25% Senior Notes due 2019
Debt Disclosure [Line Items]
Senior Notes, Noncurrent			$ 300,000,000		$ 300,000,000
Annual interest rate			7.25%
7.25% Senior Notes due 2019 | Through March 31, 2016
Debt Disclosure [Line Items]
Redemption option, percent of principal			103.625%
7.25% Senior Notes due 2019 | Through December 31, 2016 (TTM)
Debt Disclosure [Line Items]
Redemption option, percent of principal			100.00%
8.50% Senior Notes due 2020
Debt Disclosure [Line Items]
Senior Notes, Noncurrent			$ 775,000,000		$ 775,000,000
Annual interest rate			8.50%
Subsequent Event [Member]
Debt Disclosure [Line Items]
Derivatives Settled to Pay Down Revolver, Subsequent Event	$ 16,600,000
Line of Credit Facility, Maximum Borrowing Capacity, Subsequent Event								$ 125,000,000
Subsequent Event [Member] | Line of Credit [Member]
Debt Disclosure [Line Items]
Line of Credit Facility, Borrowing Capacity at Subsequent Period								126,900,000
Subsequent Event [Member] | Line of Credit [Member] | Letter of Credit
Debt Disclosure [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity, Subsequent Event								$ 1,900,000
Scenario, Forecast [Member] | 7.25% Senior Notes due 2019
Debt Disclosure [Line Items]
Debt Instrument, Periodic Payment, Interest							$ 10,900,000
Scenario, Forecast [Member] | 8.50% Senior Notes due 2020
Debt Disclosure [Line Items]
Debt Instrument, Periodic Payment, Interest						$ 32,900,000