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Income Taxes - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Taxes      
Previously taxed foreign income, repatriated $ 0 $ 1,300,000 $ 1,000,000
Undistributed foreign earnings $ 252,900,000    
U.S. statutory rate 35.00% 35.00% 35.00%
U.S. deferred tax asset   $ 200,000  
U.S. deferred assets, net operating loss carryforwards   400,000  
Unrecognized tax benefits $ 3,580,000    
Unrecognized tax benefits would impact the effective tax rate 2,900,000    
Interest expense related to unrecognized tax benefits     $ 1,000,000
Interest accrued $ 282,000 300,000  
Tax credit carryforward, expiration date 2016    
Tax credit carryforward tax assets $ 1,800,000 10,500,000  
Valuation allowances 1,984,000 2,311,000  
U.S.      
Income Taxes      
Cash and cash equivalents and short-term investments 219,300,000 139,100,000  
Operating loss carryforwards 0 14,700,000  
Foreign      
Income Taxes      
Cash and cash equivalents and short-term investments 266,400,000 206,400,000  
Operating loss carryforwards $ 1,100,000 $ 3,400,000  
Germany | Earliest Tax Year      
Income Taxes      
Tax years subject to examination 2013    
Tax years settled which were under tax examination 2009    
Germany | Latest Tax Year      
Income Taxes      
Tax years settled which were under tax examination 2012    
Poland | Earliest Tax Year      
Income Taxes      
Tax years subject to examination 2011    
China | Earliest Tax Year      
Income Taxes      
Tax years subject to examination 2011    
Spain | Earliest Tax Year      
Income Taxes      
Tax years subject to examination 2012    
United Kingdom | Earliest Tax Year      
Income Taxes      
Tax years subject to examination 2014    
United States | Tax Year 2011      
Income Taxes      
Tax years currently under tax examination 2011    
United States | Tax Year 2012      
Income Taxes      
Tax years currently under tax examination 2012