Quarterly report pursuant to Section 13 or 15(d)

Debt - Narrative (Details)

v3.21.2
Debt - Narrative (Details)
 3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2021
USD ($)
Mar. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Jun. 30, 2020
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Jun. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Jun. 30, 2021
EUR (€)
Sep. 30, 2020
EUR (€)
Line of Credit Facility [Line Items]                    
Foreign currency translation adjustment, net of tax $ (2,904,000) $ 8,897,000 $ (17,052,000) $ (11,240,000) $ 30,647,000 $ (11,106,000)        
Designated as Hedging Instrument                    
Line of Credit Facility [Line Items]                    
Unrealized loss expected to be recognized over the next 12 months 1,820,000           $ 1,820,000      
Foreign currency translation adjustment, net of tax             5,957,000 $ 4,377,000    
Foreign currency translation adjustment, tax             1,933,000 1,420,000    
Designated as Hedging Instrument | Interest rate swap contracts | Cash Flow Hedging                    
Line of Credit Facility [Line Items]                    
Unrealized loss on fair value of interest rate swaps, before tax             2,982,000 7,792,000    
Unrealized loss on fair value of interest rate swaps, after tax             2,252,000 5,884,000    
2025 Senior Notes                    
Line of Credit Facility [Line Items]                    
Unamortized debt costs 2,339,000           2,339,000 2,744,000    
Senior Notes 2025 | 2025 Senior Notes                    
Line of Credit Facility [Line Items]                    
Debt issued amount $ 300,000,000           $ 300,000,000      
Fixed interest rate (as a percent) 5.25%           5.25%   5.25%  
Securitization Facility                    
Line of Credit Facility [Line Items]                    
Maximum amount of borrowings available $ 115,000,000           $ 115,000,000      
Outstanding borrowings $ 90,710,000           $ 90,710,000 67,700,000    
Interest rate on facility (as a percent) 0.85%     0.91%     0.85%   0.85%  
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           $ 750,000,000      
Maximum borrowing amount drawn In foreign currency 350,000,000           350,000,000      
Unamortized debt costs 2,423,000           $ 2,423,000 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%      
Revolving Credit Facility | March 2020 Debt Amendment | LIBOR                    
Line of Credit Facility [Line Items]                    
Interest rate during period (as a percent)             1.00%      
Revolving Credit Facility | March 2020 Debt Amendment | LIBOR | Minimum                    
Line of Credit Facility [Line Items]                    
Interest rate on borrowings (as a percent)             0.75%      
Revolving Credit Facility | March 2020 Debt Amendment | LIBOR | Maximum                    
Line of Credit Facility [Line Items]                    
Interest rate on borrowings (as a percent)             2.00%      
Term Loan | March 2020 Debt Amendment                    
Line of Credit Facility [Line Items]                    
Maximum amount of borrowings available 35,000,000           $ 35,000,000      
Outstanding borrowings 0           0 22,359,000    
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           $ 35,000,000      
Weighted-average interest rate on outstanding borrowings (as a percent) 1.94%     2.44%     1.94%   1.94%  
Foreign Line of Credit | Credit Facility With European Bank                    
Line of Credit Facility [Line Items]                    
Maximum amount of borrowings available $ 29,698,000           $ 29,698,000   € 25,000,000.0  
Outstanding borrowings $ 7,786,000           $ 7,786,000 22,166,000 € 6,600,000 € 18,900,000
Weighted-average interest rate on outstanding borrowings (as a percent) 2.25%     1.25%     2.25%   2.25%  
Foreign Line of Credit | Credit Facility With European Bank | Bank Guarantees                    
Line of Credit Facility [Line Items]                    
Maximum amount of borrowings available $ 9,503,000           $ 9,503,000   € 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 259,237,000           259,237,000 257,439,000    
Euro Member Countries, Euro | Domestic Revolving Credit Facility | March 2020 Debt Amendment                    
Line of Credit Facility [Line Items]                    
Outstanding borrowings $ 115,229,000           $ 115,229,000 $ 137,188,000 € 97,000,000.0 € 117,000,000.0