Quarterly report pursuant to Section 13 or 15(d)

Contingencies - Additional Information (Detail)

v3.2.0.727
Contingencies - Additional Information (Detail) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Contingencies And Commitments [Line Items]    
Maximum exposure associated with general indemnifications $ 6.8 $ 16.8
General indemnifications minimum expiration period 1 year  
General indemnifications maximum expiration period 2 years  
Joint venture ownership percentage 50.00% 50.00%
Contingent liability reserve balance after reduction $ 2.8 $ 2.8
Other Accrued Liabilities [Member]    
Contingencies And Commitments [Line Items]    
Amount reserved for pending proceedings 0.9 2.0
Other Long-Term Liabilities [Member]    
Contingencies And Commitments [Line Items]    
Amount reserved for pending proceedings $ 0.2 $ 0.3