Income Tax Benefit/Expense - Additional Information (Detail) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2017 |
Mar. 31, 2016 |
|
| Income Tax Disclosure [Abstract] | ||
| Income tax expense (benefit) | $ 2,342 | $ 63,496 |
| Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | $ 73,100 | |
| X | ||||||||||
- References No definition available.
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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