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Employee Benefit Plans - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]      
Employee contribution to Company's profit sharing plan percentage 1.00%    
Employee contribution to Company's profit sharing plan percentage 50.00%    
Minimum age limit for specified additional amount 50 years    
Company's contributions $ 6,524 $ 2,667 $ 2,484
Bonus expense 28,097 14,599 14,434
Supplemental retirement benefits cost 1,805 1,704 $ 2,258
Accumulated benefit obligation 12,450 10,645  
Defined benefit plan expected future benefit payments $ 1,716    
Expected long-term rate of return on assets 1.80%    
Defined benefit plan assets $ 7,672    
Israel [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan assets $ 13,910 $ 16,224  
Japan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Expected long-term rate of return on assets 2.00%    
United Kingdom [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Expected long-term rate of return on assets 3.00%    
France [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Expected long-term rate of return on assets 1.30%    
Germany [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan assets $ 5,558    
Germany [Member] | Minimum [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan assets guaranteed rate of return 2.25%    
Germany [Member] | Maximum [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan assets guaranteed rate of return 4.25%