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Income Taxes - Income Tax Expense (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Current tax provision: |  |  |
U.S. Federal | $ (15,089) | $ 6,740 | $ (18,905)
State and other | (1,520) | (418) | (2,182)
Total | (16,609) | 6,322 | (21,087)
Deferred tax provision: |  |  |
U.S. Federal | 1,382 | (38,262) | 184
State and other | (75) | (3,191) | 53
Total | 1,307 | (41,453) | 237
Income tax expense | $ (15,302) | $ (35,131) | $ (20,850)

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