Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 38,731	$ 64,961
Adjustments to reconcile net income to net cash provided by operating activities:
FHLB stock dividends	(11,025)	(6,166)
Provision for credit losses	5,875	(5,690)
Originations of loans receivable held-for-sale ("LHFS")	(218)	(1,089)
Proceeds from sales of LHFS	215	1,113
Amortization and accretion of premiums and discounts on securities	2,296	4,027
Depreciation and amortization of premises and equipment	6,816	7,020
Amortization of intangible assets	821	1,049
Amortization of deferred amounts related to FHLB advances, net	1,262	1,347
Common stock committed to be released for allocation - ESOP	935	1,356
Stock-based compensation	238	373
Changes in:
Unrestricted cash collateral received from derivative counterparties, net	1,070	2,620
Other assets, net	912	6,307
Income taxes payable/receivable, net	(4,660)	(2,921)
Deferred income tax liabilities, net	878	2,182
Other liabilities	(10,083)	(13,095)
Net cash provided by operating activities	34,063	63,394
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of AFS securities	0	(86,993)
Proceeds from calls, maturities and principal reductions of AFS securities	141,357	261,160
Proceeds from the redemption of FHLB stock	263,807	188,618
Purchase of FHLB stock	(268,170)	(196,727)
Net change in loans receivable	(510,851)	(151,805)
Proceeds from sale of participating interest in loans receivable	5,563	0
Purchase of premises and equipment	(4,397)	(4,492)
Proceeds from sale of other real estate owned ("OREO")	533	503
Proceeds from bank-owned life insurance ("BOLI") death benefit	720	1,023
Net cash (used in) provided by investing activities	(371,438)	11,287
CASH FLOWS FROM FINANCING ACTIVITIES:
Cash dividends paid	(71,849)	(91,597)
Net change in deposits	(102,026)	(267,513)
Proceeds from borrowings	4,293,870	1,079,402
Repayments on borrowings	(3,441,124)	(793,702)
Change in advances by borrowers	(39,085)	(16,774)
Repurchase of common stock	(22,196)	0
Net cash provided by (used in) financing activities	617,590	(90,184)
NET INCREASE / (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	280,215	(15,503)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	49,194	70,292
End of period	$ 329,409	$ 54,789