Annual report pursuant to Section 13 and 15(d)

DEBT AND FINANCING ARRANGEMENTS - Narrative (Details)

v3.23.3
DEBT AND FINANCING ARRANGEMENTS - Narrative (Details)
12 Months Ended
Sep. 30, 2023
USD ($)
Sep. 30, 2023
EUR (€)
Sep. 30, 2022
USD ($)
Sep. 30, 2022
EUR (€)
Debt Instrument [Line Items]        
Other borrowings $ 790,180,000   $ 798,568,000  
Receivables Purchase Agreement        
Debt Instrument [Line Items]        
Facility limit 125,000,000      
Gain (loss) on sale of financing receivable 0      
Receivables sold to purchasers 101,800,000   96,590,000  
Unsold receivables 57,897,000   $ 44,262,000  
Principal amount of receivables sold 55,159,000      
Factored accounts receivable, outstanding $ 18,045,000      
Line of Credit | March 2020 Debt Amendment        
Debt Instrument [Line Items]        
Weighted-average interest rate on outstanding borrowings (as a percent) 5.95% 5.95% 3.13% 3.13%
2025 Senior Notes        
Debt Instrument [Line Items]        
Debt issued $ 299,625,000      
Fixed interest rate (as a percent) 5.25% 5.25%    
Debt issuance costs $ 1,125,000   $ 1,664,000  
Other borrowings $ 298,500,000   $ 297,961,000  
Other borrowings        
Debt Instrument [Line Items]        
Weighted-average interest rate on outstanding borrowings (as a percent) 2.95% 2.95% 1.85% 1.85%
Other borrowings $ 19,241,000   $ 13,434,000  
Revolving Credit Facility | March 2020 Debt Amendment        
Debt Instrument [Line Items]        
Maximum borrowing amount drawn In foreign currency 350,000,000      
Unamortized costs $ 949,000   1,522,000  
Revolving Credit Facility | March 2020 Debt Amendment | SOFR        
Debt Instrument [Line Items]        
Rate spread adjustment (as a percent) 0.10%      
Interest rate during period (as a percent) 1.25%      
Revolving Credit Facility | March 2020 Debt Amendment | Minimum | SOFR        
Debt Instrument [Line Items]        
Variable interest rate (as a percent) 0.75%      
Revolving Credit Facility | March 2020 Debt Amendment | Minimum | LIBOR        
Debt Instrument [Line Items]        
Variable interest rate (as a percent) 0.75%      
Revolving Credit Facility | March 2020 Debt Amendment | Maximum | SOFR        
Debt Instrument [Line Items]        
Variable interest rate (as a percent) 2.00%      
Revolving Credit Facility | March 2020 Debt Amendment | Maximum | LIBOR        
Debt Instrument [Line Items]        
Variable interest rate (as a percent) 2.00%      
Revolving Credit Facility | Line of Credit        
Debt Instrument [Line Items]        
Other borrowings $ 463,168,000   480,107,000  
Revolving Credit Facility | Line of Credit | March 2020 Debt Amendment        
Debt Instrument [Line Items]        
Maximum amount of borrowings available $ 750,000,000      
Revolving Credit Facility | Line of Credit | March 2020 Debt Amendment | Minimum        
Debt Instrument [Line Items]        
Annual commitment fee range on unused portion 0.15%      
Revolving Credit Facility | Line of Credit | March 2020 Debt Amendment | Maximum        
Debt Instrument [Line Items]        
Annual commitment fee range on unused portion 0.30%      
Standby Letters of Credit | Line of Credit | March 2020 Debt Amendment        
Debt Instrument [Line Items]        
Maximum amount of borrowings available $ 55,000,000      
Foreign Line of Credit | Credit Facility With European Bank        
Debt Instrument [Line Items]        
Maximum amount of borrowings available 10,576,000 € 10,000,000    
Outstanding borrowings   0 $ 8,050,000 € 8,200,000
Weighted-average interest rate on outstanding borrowings (as a percent)     2.25% 2.25%
Foreign Line of Credit | Bank Guarantees | Credit Facility With European Bank        
Debt Instrument [Line Items]        
Maximum amount of borrowings available $ 19,566,000 € 18,500,000