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Employee Benefit Plans - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Age
Plan
Dec. 31, 2012
Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]      
Minimum age limit for specified additional amount 50    
Employers contribution percentage limit 50.00%    
Employees maximum contribution as a percentage of salary 6.00%    
Company's contributions $ 2,334 $ 2,245 $ 2,276
Foreign defined benefit plan 1    
Bonus expense 12,258 6,248 7,559
Supplemental retirement benefits cost 4,988 3,454 3,931
Accumulated benefit obligation 21,403 16,353  
Chief Executive Officer [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Payment related to accrued supplemental retirement benefits 13,718    
Minimum [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Employee contribution to Company's profit sharing plan percentage 1.00%    
Maximum [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Employee contribution to Company's profit sharing plan percentage 50.00%    
Other Current Liabilities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Accumulated benefit obligation 14,517    
Other Noncurrent Liabilities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Accumulated benefit obligation $ 6,886