Quarterly report pursuant to Section 13 or 15(d)

Derivatives and Hedging Activities - Narrative (Details)

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Derivatives and Hedging Activities - Narrative (Details)
$ in Thousands, € in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Sep. 30, 2023
USD ($)
Mar. 31, 2024
EUR (€)
Sep. 30, 2023
EUR (€)
Derivative Instruments and Hedging Activities Disclosures [Line Items]              
Derivative asset, noncurrent, statement of financial position [extensible enumeration] Other assets, Other liabilities   Other assets, Other liabilities   Other assets, Other liabilities Other assets, Other liabilities Other assets, Other liabilities
Foreign Line of Credit              
Derivative Instruments and Hedging Activities Disclosures [Line Items]              
Outstanding borrowings $ 59,370   $ 59,370   $ 58,168 € 55.0 € 55.0
Designated as Hedging Instrument              
Derivative Instruments and Hedging Activities Disclosures [Line Items]              
Unrealized gain expected to be recognized over the next 12 months 2,896   2,896        
Interest Rate Swaps | Cash flow hedges | Designated as Hedging Instrument              
Derivative Instruments and Hedging Activities Disclosures [Line Items]              
Unrealized gain on fair value of interest rate swaps, before tax     1,767   4,006    
Unrealized gain on fair value of interest rate swaps, after tax     1,319   2,991    
Derivative, notional amount 175,000   175,000   175,000    
LIBOR-Based Swap | Cash flow hedges | Designated as Hedging Instrument              
Derivative Instruments and Hedging Activities Disclosures [Line Items]              
Unrecognized gain on LIBOR-based swaps     5,775   8,084    
Unrecognized gain on LIBOR-based swaps, after tax     4,316   6,041    
Cross- Currency Swaps | Net investment hedges | Designated as Hedging Instrument              
Derivative Instruments and Hedging Activities Disclosures [Line Items]              
Derivative, notional amount 81,392   81,392   81,392    
Net investment hedge, gain (loss), after reclassification and tax     3,790   2,065    
Net investment hedge, gain (loss), after reclassification, tax expense (benefit)     1,286   701    
Derivative asset, noncurrent 5,076   5,076   $ 2,766    
Cross- Currency Swaps | Net investment hedges | Designated as Hedging Instrument | Interest Expense              
Derivative Instruments and Hedging Activities Disclosures [Line Items]              
Net investment hedge income $ 327 $ 309 586 $ 581      
Foreign currency debt instruments | Net investment hedges | Designated as Hedging Instrument              
Derivative Instruments and Hedging Activities Disclosures [Line Items]              
Net investment hedge, gain (loss), after reclassification and tax     1,991        
Net investment hedge, gain (loss), after reclassification, tax expense (benefit)     $ 675