Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 64,961	$ 57,529
Adjustments to reconcile net income to net cash provided by operating activities:
FHLB stock dividends	(6,166)	(2,964)
Provision for credit losses	(5,690)	(7,187)
Originations of loans receivable held-for-sale ("LHFS")	(1,089)	(597)
Proceeds from sales of LHFS	1,113	610
Amortization and accretion of premiums and discounts on securities	4,027	4,308
Depreciation and amortization of premises and equipment	7,020	6,938
Amortization of intangible assets	1,049	1,264
Amortization of deferred amounts related to FHLB advances, net	1,347	1,132
Common stock committed to be released for allocation - ESOP	1,356	1,569
Stock-based compensation	373	379
Gain on sale of Visa Class B shares	0	(7,386)
Changes in:
Unrestricted cash collateral (provided to)/received from derivative counterparties, net	2,620	0
Other assets, net	6,307	8,776
Income taxes payable/receivable, net	(2,921)	(1,703)
Deferred income tax liabilities, net	2,182	(511)
Other liabilities	(13,095)	(10,780)
Net cash provided by operating activities	63,394	51,377
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of AFS securities	(86,993)	(953,818)
Proceeds from calls, maturities and principal reductions of AFS securities	261,160	476,158
Proceeds from the redemption of FHLB stock	188,618	24,225
Purchase of FHLB stock	(196,727)	(1,029)
Net change in loans receivable	(151,805)	179,277
Purchase of premises and equipment	(4,492)	(8,108)
Proceeds from sale of other real estate owned ("OREO")	503	97
Proceeds from the sale of Visa Class B shares	0	7,386
Proceeds from sale of assets held-for-sale	0	977
Proceeds from bank-owned life insurance ("BOLI") death benefit	1,023	443
Net cash provided by (used in) investing activities	11,287	(274,392)
CASH FLOWS FROM FINANCING ACTIVITIES:
Cash dividends paid	(91,597)	(106,372)
Net change in deposits	(267,513)	446,886
Proceeds from borrowings	1,079,402	803,800
Repayments on borrowings	(793,702)	(1,006,800)
Change in advance payments by borrowers for taxes and insurance	(16,774)	(18,391)
Payment of FHLB prepayment penalties	0	(5,076)
Repurchase of common stock	0	(4,569)
Stock options exercised	0	324
Net cash (used in) provided by financing activities	(90,184)	109,802
NET DECREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(15,503)	(113,213)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	70,292	239,708
End of period	$ 54,789	$ 126,495