Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 38,010	$ (101,659)	$ 84,453
Adjustments to reconcile net income to net cash provided by operating activities:
FHLB stock dividends	(10,009)	(13,821)	(10,031)
Provision for credit losses	1,259	6,838	(4,630)
Originations of loans receivable held-for-sale ("LHFS")	(712)	(1,217)	(1,088)
Proceeds from sales of LHFS	725	1,222	1,113
Amortization and accretion of premiums and discounts on securities	(8,182)	3,016	4,967
Depreciation and amortization of premises and equipment	7,929	9,039	9,365
Amortization of intangible assets	774	1,069	1,372
Amortization of deferred amounts related to FHLB advances, net	1,529	1,643	1,804
Common stock committed to be released for allocation - ESOP	927	1,179	1,740
Stock-based compensation	358	327	498
Provision for deferred income taxes	3,546	(45,520)	2,047
Net loss from securities transactions	13,345	192,622	0
Changes in:
Unrestricted cash collateral from derivative counterparties, net	(11,850)	1,940	12,050
Other assets, net	8,227	2,528	6,661
Income taxes receivable, net	8,139	(7,303)	(2,197)
Other liabilities	(22,831)	(4,372)	(10,823)
Net cash provided by operating activities	31,184	47,531	97,301
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of AFS securities	(1,176,645)	0	(88,026)
Proceeds from calls, maturities and principal reductions of AFS securities	455,110	186,860	323,025
Proceeds from sale of AFS securities	1,272,512	0	0
Proceeds from the redemption of FHLB stock	19,548	358,491	302,243
Purchase of FHLB stock	0	(354,760)	(319,415)
Net change in loans receivable	63,626	(520,229)	(381,561)
Proceeds from sale of participating interest in loans receivable	0	5,563	0
Purchase of premises and equipment	(7,184)	(6,281)	(5,557)
Proceeds from sale of other real estate owned ("OREO")	464	533	692
Proceeds from sale of assets held-for-sale	629	0	0
Proceeds from bank-owned life insurance ("BOLI") death benefit	1,049	720	1,023
Net cash provided by (used in) investing activities	629,109	(329,103)	(167,576)
CASH FLOWS FROM FINANCING ACTIVITIES:
Cash dividends paid	(44,522)	(83,172)	(103,131)
Net change in deposits	78,762	(143,646)	(402,530)
Proceeds from borrowings	350,100	4,293,870	1,454,402
Repayments on borrowings	(1,052,291)	(3,548,542)	(906,902)
Change in advances by borrowers	(1,192)	(17,074)	7,338
Repurchase of common stock	(19,448)	(23,453)	0
Net cash (used in) provided by financing activities	(688,591)	477,983	49,177
NET (DECREASE) / INCREASE IN CASH AND CASH EQUIVALENTS	(28,298)	196,411	(21,098)
CASH AND CASH EQUIVALENTS:
Beginning of year	245,605	49,194	70,292
End of year	217,307	245,605	49,194
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Income tax payments	6,017	5,424	13,559
Interest payments	$ 224,701	$ 188,908	$ 83,833