Quarterly report pursuant to Section 13 or 15(d)

Contingencies - Additional Information (Detail)

v3.5.0.2
Contingencies - Additional Information (Detail) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2016
Dec. 31, 2015
Contingencies And Commitments [Line Items]    
Maximum exposure associated with general indemnifications $ 3.5 $ 5.3
General indemnifications minimum expiration period 1 year  
General indemnifications maximum expiration period 3 years  
Contingent liability reserve balance after reduction $ 2.8 $ 2.8
Dealership [Member]    
Contingencies And Commitments [Line Items]    
Joint venture ownership percentage 50.00% 50.00%
Other Accrued Liabilities [Member]    
Contingencies And Commitments [Line Items]    
Amount reserved for pending proceedings $ 0.3 $ 0.3
Other Long-Term Liabilities [Member]    
Contingencies And Commitments [Line Items]    
Amount reserved for pending proceedings $ 0.2 $ 0.2