Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Accounting Policies [Abstract]
Foreign exchange gain (loss) recognized	$ (200)	$ (700)	$ (800)	$ (2,600)
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total other comprehensive (loss) income	$ (20,132)	59,016	$ 11,070	(100,938)
Scenario, Previously Reported | Translation of Acquired Intangibles
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total other comprehensive (loss) income		$ 6,800		$ (86,200)