Quarterly report pursuant to Section 13 or 15(d)

Debt - Narrative (Details)

v3.20.4
Debt - Narrative (Details)
 3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Mar. 31, 2020
USD ($)
Sep. 30, 2020
USD ($)
Dec. 31, 2020
EUR (€)
Sep. 30, 2020
EUR (€)
Line of Credit Facility [Line Items]            
Foreign currency translation adjustment, net of tax $ 17,052,000 $ 11,106,000        
Designated as Hedging Instrument            
Line of Credit Facility [Line Items]            
Unrealized gain (loss) expected to be recognized over the next 12 months (2,181,000)          
Foreign currency translation adjustment, net of tax 9,148,000 4,377,000        
Foreign currency translation adjustment, tax 2,968,000 $ 1,420,000        
Designated as Hedging Instrument | Interest rate swap contracts | Cash Flow Hedging            
Line of Credit Facility [Line Items]            
Unrealized gain (loss) on fair value of interest rate swaps, before tax (6,422,000)   $ (7,792,000) $ (7,792,000)    
Unrealized gain (loss) on fair value of interest rate swaps, after tax (4,849,000)     (5,884,000)    
2025 Senior Notes            
Line of Credit Facility [Line Items]            
Unamortized debt costs 2,609,000     2,744,000    
Senior Notes 2025 | 2025 Senior Notes            
Line of Credit Facility [Line Items]            
Debt issued amount $ 300,000,000          
Fixed interest rate (as a percent) 5.25%       5.25%  
Securitization Facility            
Line of Credit Facility [Line Items]            
Maximum amount of borrowings available $ 115,000,000          
Outstanding borrowings $ 64,300,000     67,700,000    
Interest rate on facility (as a percent) 0.89% 2.51%     0.89%  
Securitization Facility | Minimum            
Line of Credit Facility [Line Items]            
Commitment fee (as a percent) 0.25%          
Securitization Facility | Maximum            
Line of Credit Facility [Line Items]            
Commitment fee (as a percent) 0.35%          
Securitization Facility | LIBOR            
Line of Credit Facility [Line Items]            
Interest rate on borrowings (as a percent) 0.75%          
Revolving Credit Facility | March 2020 Debt Amendment            
Line of Credit Facility [Line Items]            
Maximum amount of borrowings available $ 750,000,000          
Maximum borrowing amount drawn In foreign currency 350,000,000          
Unamortized debt costs $ 2,565,000     2,734,000    
Revolving Credit Facility | March 2020 Debt Amendment | Minimum            
Line of Credit Facility [Line Items]            
Annual commitment fee range on unused portion (as a percent) 0.15%          
Revolving Credit Facility | March 2020 Debt Amendment | Maximum            
Line of Credit Facility [Line Items]            
Annual commitment fee range on unused portion (as a percent) 0.30%          
Term Loan | March 2020 Debt Amendment            
Line of Credit Facility [Line Items]            
Maximum amount of borrowings available $ 35,000,000          
Outstanding borrowings $ 22,406,000     22,359,000    
Term Loan | March 2020 Debt Amendment | LIBOR            
Line of Credit Facility [Line Items]            
Interest rate during period (as a percent) 1.25%          
Term Loan | March 2020 Debt Amendment | LIBOR | Minimum            
Line of Credit Facility [Line Items]            
Interest rate on borrowings (as a percent) 0.75%          
Term Loan | March 2020 Debt Amendment | LIBOR | Maximum            
Line of Credit Facility [Line Items]            
Interest rate on borrowings (as a percent) 2.00%          
Domestic Revolving Credit Facility | March 2020 Debt Amendment            
Line of Credit Facility [Line Items]            
Maximum available for issuance of trade and standby letters of credit $ 35,000,000          
Weighted-average interest rate on outstanding borrowings (as a percent) 2.07% 2.60%     2.07%  
Foreign Line of Credit | Credit Facility With European Bank            
Line of Credit Facility [Line Items]            
Maximum amount of borrowings available $ 30,664,000       € 25,000,000.0  
Outstanding borrowings $ 7,053,000     22,166,000 € 5,800,000 € 18,900,000
Weighted-average interest rate on outstanding borrowings (as a percent) 2.25% 1.25%     2.25%  
Foreign Line of Credit | Credit Facility With European Bank | Bank Guarantees            
Line of Credit Facility [Line Items]            
Maximum amount of borrowings available $ 9,812,000       € 8,000,000.0  
United States of America, Dollars | Domestic Revolving Credit Facility | March 2020 Debt Amendment            
Line of Credit Facility [Line Items]            
Outstanding borrowings 262,923,000     257,439,000    
Euro Member Countries, Euro | Domestic Revolving Credit Facility | March 2020 Debt Amendment            
Line of Credit Facility [Line Items]            
Outstanding borrowings $ 143,507,000     $ 137,188,000 € 117,000,000.0 € 117,000,000.0