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Corporate Restructuring and Other Organizational Changes - Additional Information (Detail) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]          
Employee termination costs (adjustments) $ 0 $ 1,000,000 $ 1,300,000 $ 2,800,000  
Restructuring severance costs     $ 2,200,000    
Liability is expected to be paid     12 months    
Unpaid severance liability 1,400,000   $ 1,400,000    
Remaining liability paid to employees 1,100,000   1,100,000    
Restructuring charges 1,795,000   1,795,000   $ 2,793,000
Other Noncurrent Liabilities [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring charges 300,000   300,000    
Severance [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring charges 1,434,000   1,434,000   2,341,000
Employee Compensation [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring charges 1,100,000   1,100,000    
Facility Closures [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring charges $ 361,000   361,000   $ 452,000
Americas [Member]          
Restructuring Cost and Reserve [Line Items]          
Employee termination costs (adjustments)   400,000 700,000 2,100,000  
EMEA [Member]          
Restructuring Cost and Reserve [Line Items]          
Employee termination costs (adjustments)   200,000 $ 600,000 200,000  
Asia/Pacific [Member]          
Restructuring Cost and Reserve [Line Items]          
Employee termination costs (adjustments)   $ 400,000   $ 500,000