Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.3.0.814
Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Dec. 31, 2013
Schedule Of Income Taxes [Line Items]            
Effective tax rate 17.70% 18.70% 21.30% 22.30%    
U.S. federal and state statutory rate 39.00%   39.00%      
Cash and cash equivalents $ 510,679 $ 440,790 $ 510,679 $ 440,790 $ 466,685 $ 372,011
Repatriation of earnings     26,500      
Non-US [Member]            
Schedule Of Income Taxes [Line Items]            
Cash and cash equivalents $ 198,700   $ 198,700      
Non-US [Member] | Geographic concentration risk [Member]            
Schedule Of Income Taxes [Line Items]            
Percentage of cash and cash equivalents     38.90%      
Minimum [Member]            
Schedule Of Income Taxes [Line Items]            
Effective tax rate     20.00%      
Minimum [Member] | Non-U.S jurisdictions [Member]            
Schedule Of Income Taxes [Line Items]            
Statutory federal rate     0.00%      
Maximum [Member]            
Schedule Of Income Taxes [Line Items]            
Effective tax rate     23.00%      
Maximum [Member] | Non-U.S jurisdictions [Member]            
Schedule Of Income Taxes [Line Items]            
Statutory federal rate     34.00%