v3.3.1.900

Income Taxes - Significant Components of Net Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Income Tax Disclosure [Abstract] |  |
Net operating loss carryforwards | $ 88,230 | $ 46,730
Other | 1,672 | 1,305
Total deferred tax assets | 89,902 | 48,035
Difference in depreciation, depletion and capitalization methods-oil and gas properties | (118,534) | (158,647)
Unrealized gain on commodity derivatives | (2,391) | (14,307)
Total deferred tax liabilities | (120,925) | (172,954)
Valuation allowance | (756) |
Net deferred tax liability | $ (31,779) | $ (124,919)

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