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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Income Statement [Abstract]        
Net unrealized holding gains (losses) on available-for-sale securities, tax $ (24) $ 9 $ (69) $ (13)
Amortization and unrealized gains (losses) on interest rate agreements, tax $ (1,366) $ 394 $ (4,070) $ 2,264