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Business Combinations - Additional Information (Detail)
$ in Millions
 1 Months Ended 12 Months Ended
Sep. 30, 2012
USD ($)
Installment
Jul. 31, 2012
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Business Acquisition [Line Items]          
Other income     $ 5.6 $ 5.9 $ 6.0
Maui, Inc.          
Business Acquisition [Line Items]          
Business acquisition, cash paid   $ 36.2      
Business acquisition maximum additional earn-out payment   $ 18.0      
Additional earn-out payment period   3 years      
JKID, LTD.          
Business Acquisition [Line Items]          
Business acquisition, cash paid $ 1.1        
Business acquisition maximum additional earn-out payment $ 4.4        
Additional earn-out payment period 2 years        
Business acquisition, deferred cash payment $ 5.5        
Business acquisition, deferred cash payment in installment $ 1.1        
Number of semi-annual payment of deferred cash payment | Installment 5