Income Taxes - Expense (Benefit) for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current tax provision:
Federal	$ 541	$ 271	$ 496
State	543	431	612
Foreign	7,289	4,393	4,930
Current tax provision (benefit)	8,373	5,095	6,038
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	(129,405)	(41)	(1,549)
State	(10,693)	113	70
Foreign	(836)	328	1,072
Deferred tax expense (benefit)	(140,934)	400	(407)
Income tax provision	$ (132,561)	$ 5,495	$ 5,631

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