Quarterly report [Sections 13 or 15(d)]

Derivatives and Hedging Activities - Cross Currency Swaps (Details)

v3.26.1
Derivatives and Hedging Activities - Cross Currency Swaps (Details) - Net investment hedges - Designated as Hedging Instrument - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Mar. 31, 2026
Sep. 30, 2025
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional amount $ 126,392 $ 126,392
Unrealized Losses Recognized in AOCI (10,083) (13,703)
USD Euro Exchange Future    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional amount 81,392 81,392
Unrealized Losses Recognized in AOCI (7,929) (9,443)
USD Sweden Exchange Future    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional amount 20,000 20,000
Unrealized Losses Recognized in AOCI (1,730) (2,571)
USD Euro Exchange Future    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional amount 25,000 25,000
Unrealized Losses Recognized in AOCI (424) (1,689)
Cross-Currency Swaps    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Net investment hedge, gain (loss), after reclassification, tax $ (3,376) $ 4,652