Quarterly report pursuant to Section 13 or 15(d)

Debt and Financing Arrangements - Narrative (Details)

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Debt and Financing Arrangements - Narrative (Details)
€ in Millions
 3 Months Ended 6 Months Ended
Dec. 31, 2022
Mar. 31, 2023
USD ($)
Mar. 31, 2023
EUR (€)
Sep. 30, 2022
USD ($)
Sep. 30, 2022
EUR (€)
Mar. 31, 2022
Line of Credit Facility [Line Items]            
Other borrowings   $ 778,027,000   $ 798,568,000    
2025 Senior Notes            
Line of Credit Facility [Line Items]            
Unamortized debt costs   1,394,000   1,664,000    
Other borrowings   $ 298,231,000   297,961,000    
Other borrowings            
Line of Credit Facility [Line Items]            
Weighted-average interest rate on outstanding borrowings (as a percent)   3.01% 3.01%     1.92%
Other borrowings   $ 21,057,000   13,434,000    
Foreign Line of Credit | Credit Facility With European Bank            
Line of Credit Facility [Line Items]            
Maximum amount of borrowings available   10,879,000 € 10.0      
Outstanding borrowings   $ 970,000 € 0.9 8,050,000 € 8.2  
Weighted-average interest rate on outstanding borrowings (as a percent)   5.17% 5.17%     2.25%
Foreign Line of Credit | Bank Guarantees | Credit Facility With European Bank            
Line of Credit Facility [Line Items]            
Maximum amount of borrowings available   $ 17,406,000 € 16.0      
March 2020 Debt Amendment | Revolving credit facilities            
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   $ 1,218,000   1,522,000    
March 2020 Debt Amendment | Revolving credit facilities | Minimum            
Line of Credit Facility [Line Items]            
Annual commitment fee range on unused portion (as a percent)   0.15%        
March 2020 Debt Amendment | Revolving credit facilities | Maximum            
Line of Credit Facility [Line Items]            
Annual commitment fee range on unused portion (as a percent)   0.30%        
March 2020 Debt Amendment | Revolving credit facilities | SOFR            
Line of Credit Facility [Line Items]            
Rate spread adjustment (as a percent)   0.10%        
Interest rate during period (as a percent)   1.25%        
March 2020 Debt Amendment | Revolving credit facilities | SOFR | Minimum            
Line of Credit Facility [Line Items]            
Interest rate on borrowings (as a percent)   0.75%        
March 2020 Debt Amendment | Revolving credit facilities | SOFR | Maximum            
Line of Credit Facility [Line Items]            
Interest rate on borrowings (as a percent)   2.00%        
March 2020 Debt Amendment | Revolving credit facilities | LIBOR | Minimum            
Line of Credit Facility [Line Items]            
Interest rate on borrowings (as a percent) 0.75%          
March 2020 Debt Amendment | Revolving credit facilities | LIBOR | Maximum            
Line of Credit Facility [Line Items]            
Interest rate on borrowings (as a percent) 2.00%          
March 2020 Debt Amendment | Domestic Revolving Credit Facility            
Line of Credit Facility [Line Items]            
Maximum available for issuance of trade and standby letters of credit   $ 55,000,000        
Weighted-average interest rate on outstanding borrowings (as a percent)   5.17% 5.17%     1.89%
March 2020 Debt Amendment | Domestic Revolving Credit Facility | United States of America, Dollars            
Line of Credit Facility [Line Items]            
Outstanding borrowings   $ 451,501,000   472,057,000    
Senior Notes 2025 | 2025 Senior Notes            
Line of Credit Facility [Line Items]            
Debt issued amount   $ 299,625,000        
Fixed interest rate (as a percent)   5.25% 5.25%      
Receivables Purchase Agreement            
Line of Credit Facility [Line Items]            
Facility limit   $ 125,000        
Receivables sold to purchasers   108,600,000   96,590,000    
Unsold receivables   41,830,000   $ 44,262,000    
Principal amount of receivables sold   $ 16,950,000