Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.3.1.900
Commitments and Contingencies - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Commitment And Contingencies [Line Items]      
Rent expense for operating leases $ 19,200,000 $ 21,800,000 $ 19,900,000
Exposure per occurrence, employees compensation 250,000    
Aggregate self insured exposure per employer's liability 500,000    
Exposure per occurrence 500,000    
Aggregate self insured exposure per occurrence, foreign employees compensation 100,000    
Aggregate self insured exposure per employer's liability, foreign 1,000,000    
Aggregate deductible for protection and indemnity and maritime employers' liability claims 400,000    
Auto liability claims 100,000    
Gross self insurance accruals 5,500,000 $ 5,900,000  
Related insurance recoveries 2,000,000    
Estimated Litigation Liability $ 11,760,000    
Minimum [Member]      
Commitment And Contingencies [Line Items]      
Employment agreements terms 1 year    
Maximum [Member]      
Commitment And Contingencies [Line Items]      
Employment agreements terms 2 years