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Long-Term Debt - Additional Information (Detail)
3 Months Ended 9 Months Ended
Sep. 30, 2020
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2020
EUR (€)
Apr. 16, 2020
USD ($)
Aug. 31, 2015
USD ($)
Debt Instrument [Line Items]          
Repayment of borrowings   $ 100,000,000      
Italy [Member]          
Debt Instrument [Line Items]          
Amount outstanding under lines of credit $ 0 0      
Maximum borrowing capacity 6,400,000 6,400,000 € 5,500,000    
Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Amount outstanding under lines of credit       $ 100,000,000.0  
Repayment of borrowings 100,000,000.0        
2015 Credit Agreement [Member] | Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Amount outstanding under lines of credit $ 0 $ 0      
Debt instrument term (in years)   5 years      
Maximum borrowing capacity         $ 300,000,000