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Summary of Significant Accounting Policies - Additional Information (Detail) |  | 1 Months Ended | 10 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Mar. 05, 2014 USD ($) | Mar. 31, 2014 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2015 USD ($) counterparty | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Deferred financing costs |  |  |  | $ 42,900,000 |  |
Allowance for doubtful accounts |  |  | $ 0 | $ 0 | $ 0 |
Number of days from date of drilling fee payment to apply advance |  |  |  | 90 days |  |
Proceeds from sale of property |  |  |  | $ 1,075,000 | 324,852,000 |
Gain on sale of properties |  |  |  | 0 | 186,999,000 | $ 0
Impairment of oil and gas properties |  |  |  | 46,109,000 | 47,238,000 | 1,168,000
Capitalized interest costs |  |  |  | 18,600,000 | 8,800,000 | 4,600,000
Amount of capitalized exploratory well costs that have been capitalized for period greater than one year |  |  |  | $ 0 |  |
Derivative, number of counterparties | counterparty |  |  |  | 8 |  |
Past-due receivables from counterparties |  |  |  | $ 0 |  |
Restricted stock awards vesting period |  |  |  | 3 years |  |
Federal |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Stock-based compensation related to unrealized excess tax benefits |  |  |  | $ 9,600,000 |  |
State |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Stock-based compensation related to unrealized excess tax benefits |  |  |  | $ 7,600,000 |  |
1 to 12 months |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Contractual commodity derivative volume, percent |  |  |  | 110.00% |  |
13 to 24 months |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Contractual commodity derivative volume, percent |  |  |  | 100.00% |  |
25 to 36 months |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Contractual commodity derivative volume, percent |  |  |  | 75.00% |  |
37 to 60 months |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Contractual commodity derivative volume, percent |  |  |  | 50.00% |  |
Accounting Standards Update 2015-03 |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Decrease in other assets |  |  |  | $ 35,400,000 |  |
Accounting Standards Update 2015-03 | Restatement adjustment |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Decrease in long-term debt |  |  | 29,300,000 |  | 29,300,000 |
Minimum |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Annual forfeiture rate |  |  |  | 0.00% |  |
Minimum | Performance share unit awards |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Annual forfeiture rate |  |  |  | 2.40% |  |
Maximum |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Annual forfeiture rate |  |  |  | 16.90% |  |
Maximum | Performance share unit awards |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Annual forfeiture rate |  |  |  | 4.90% |  |
Non-operated oil and natural gas properties |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Proceeds from sale of property | $ 324,900,000 | $ 324,900,000 |  |  |  |
Gain on sale of properties |  | $ 187,000,000 | $ 187,000,000 |  |  |
Building |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Estimated life of assets |  |  |  | 20 years |  |
Proved oil and gas properties |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Impairment of oil and gas properties |  |  |  |  | 40,000,000 | 0
Unproved oil and gas properties |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Impairment of oil and gas properties |  |  |  | $ 36,600,000 | $ 7,300,000 | $ 1,200,000
Salt water disposal facility |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Estimated life of assets |  |  |  | 30 years |  |
Furniture, software and equipment | Minimum |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Estimated life of assets |  |  |  | 2 years |  |
Furniture, software and equipment | Maximum |  |  |  |  |  |
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Estimated life of assets |  |  |  | 7 years |  |

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