Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Income Taxes [Line Items]
Effective tax rate	15.80%	26.20%
Gross unrecognized tax benefits excluding interest and penalties	$ 25,925		$ 25,465
Net unrecognized tax benefit excluding interest and penalties that would impact effective tax rate	18,854
Accrued interest on unrecognized tax benefits	469		$ 491
Net unrecognized tax benefits, excluding interest and penalties, related to foreign tax positions	$ 1,702
Income tax examination, description	The Company and its subsidiaries are subject to examination by U.S. federal, state and foreign tax authorities. The U.S. statute of limitations remains open for tax years 2013 through present. The statute of limitations for the Company's tax filings in other jurisdictions varies between fiscal years 2008 through present. We also have certain federal credit carry-forwards and state tax loss and credit carry-forwards that are open to examination for tax years 2000 through the present.
Earliest Tax Year [Member]
Income Taxes [Line Items]
Open tax year	2013