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Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Income Taxes [Line Items]          
Effective tax rate 23.80% 25.50% 21.20% 26.00%  
Gross unrecognized tax benefits excluding interest and penalties $ 27,239   $ 27,239   $ 25,465
Net unrecognized tax benefit excluding interest and penalties that would impact effective tax rate 18,760   18,760    
Accrued interest on unrecognized tax benefits $ 444   444   $ 491
Net unrecognized tax benefits, excluding interest and penalties, related to foreign tax positions     $ 1,686    
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