Restructuring Costs - Activity within Liability Established for Restructuring Actions, Included in Other Accrued Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]      
Beginning balance $ 12,065    
Additional charge recorded 1,871 1,980  
Cash paid (2,697)    
Foreign exchange and other non-cash items (103)    
Ending balance 11,136    
Total Restructuring Reserve Liability 11,136    
Restructuring reserve, current 5,019   5,657
Other Accrued Liabilities [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring reserve, current 5,019    
Other Noncurrent Liabilities [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring reserve, non-current 6,117    
Employee-Related Costs [Member]      
Restructuring Cost and Reserve [Line Items]      
Beginning balance 3,822    
Additional charge recorded 1,544    
Cash paid (1,939)    
Foreign exchange and other non-cash items (103)    
Ending balance 3,324    
Total Restructuring Reserve Liability 3,324    
Employee-Related Costs [Member] | Other Accrued Liabilities [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring reserve, current 3,324    
Lease Termination Costs [Member]      
Restructuring Cost and Reserve [Line Items]      
Beginning balance 8,243    
Additional charge recorded 165    
Cash paid (596)    
Ending balance 7,812    
Total Restructuring Reserve Liability 7,812    
Lease Termination Costs [Member] | Other Accrued Liabilities [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring reserve, current 1,695    
Lease Termination Costs [Member] | Other Noncurrent Liabilities [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring reserve, non-current 6,117    
Fixed Asset Related Costs [Member]      
Restructuring Cost and Reserve [Line Items]      
Additional charge recorded 162    
Cash paid $ (162)