Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities
Net income	$ 27,118	$ 23,600	$ 27,583
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	1,381	1,367	1,563
Deferred income taxes	(291)	(177)	275
Amortization of CDI	271	316	361
Accretion of discount on purchased loans	(75)	(182)	(340)
Stock option compensation expense	320	246	173
Gain on sales of investment securities, net	(95)	0	0
Net recoveries on investment securities	(9)	(22)	(20)
Change in fair value of investments in equity securities	24	120	22
Gain on sales of OREO and other repossessed assets, net	0	(2)	(92)
Amortization (accretion) of discounts and premiums on securities	(1,223)	(39)	118
Gain on sales of loans, net	(244)	(1,510)	(5,904)
(Gain) loss on sales/dispositions of premises and equipment, net	(19)	13	0
Provision for loan losses	2,132	270	0
Loans originated for sale	(10,946)	(55,136)	(133,006)
Proceeds from sales of loans	11,538	59,115	140,202
Amortization of loan servicing rights	1,012	1,156	1,111
Valuation adjustment on loan servicing rights, net	0	(119)	(110)
BOLI net earnings	(627)	(613)	(597)
BOLI death benefit in excess of cash surrender value	(79)	0	0
Increase (decrease) in deferred loan origination fees	921	(822)	(1,293)
Net change in accrued interest receivable and other assets, and other liabilities and accrued expenses	(112)	(1,081)	(411)
Net cash provided by operating activities	30,997	26,500	29,635
Cash flows from investing activities
Net decrease in CDs held for investment	7,706	5,588	37,063
Purchase of investment securities held to maturity	(15,602)	(208,778)	(53,049)
Purchase of investment securities available for sale	(16,994)	0	(18,698)
Proceeds from maturities and prepayments of investment securities held to maturity	13,123	11,661	12,004
Proceeds from maturities and prepayments of investment securities available for sale	7,442	20,448	13,162
Proceeds from sales of investment securities available for sale	8,927	0	0
Purchase of FHLB stock	(1,408)	(91)	(181)
(Increase) decrease in loans receivable, net	(172,857)	(163,238)	47,054
Purchase of premises and equipment	(1,106)	(911)	(895)
Proceeds from sales of OREO and other repossessed assets	0	159	985
Proceeds from death benefit on BOLI	546	0	0
Net cash provided by (used in) investing activities	(170,223)	(335,162)	37,445
Cash flows from financing activities
Net (decrease) increase in deposits	(71,241)	61,621	212,149
Proceeds from (repayment of) FHLB borrowings	(35,000)
Proceeds from (repayment of) FHLB borrowings		5,000	5,000
Proceeds from exercise of stock options	698	415	631
Repurchase of common stock	(4,998)	(4,583)	(527)
Payment of dividends	(8,267)	(7,232)	(8,589)
Net cash (used in) provided by financing activities	(48,808)	45,221	198,664
Net increase (decrease) in cash and cash equivalents	(188,034)	(263,441)	265,744
Beginning of year	316,755	580,196	314,452
End of year	128,721	316,755	580,196
Supplemental disclosure of cash flow information
Income taxes paid	6,989	5,450	5,965
Interest paid	10,303	2,700	3,244
Supplemental disclosure of non-cash investing and financing activities
Other comprehensive loss related to investment securities	(367)	(776)	(2)
Operating lease liabilities arising from recording of ROU assets	$ 72	$ 0	$ 0