LOANS - Activity in Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Allowance for loan losses by portfolio segment [Roll Forward]
Beginning balance	$ 12,844	$ 8,552
Charge-offs		(66)
Recoveries	60
Provision (credit) for loan losses	1,500	900
Ending balance	14,404	9,386
Residential Real Estate
Allowance for loan losses by portfolio segment [Roll Forward]
Beginning balance	3,951	4,155
Provision (credit) for loan losses	557	(40)
Ending balance	4,508	4,115
Multi-family
Allowance for loan losses by portfolio segment [Roll Forward]
Beginning balance	4,308	2,433
Charge-offs		(66)
Provision (credit) for loan losses	1,389	201
Ending balance	5,697	2,568
Commercial Real Estate
Allowance for loan losses by portfolio segment [Roll Forward]
Beginning balance	3,707	1,884
Provision (credit) for loan losses	(473)	634
Ending balance	3,234	2,518
Commercial and Industrial
Allowance for loan losses by portfolio segment [Roll Forward]
Beginning balance	761	79
Recoveries	60
Provision (credit) for loan losses	31	105
Ending balance	852	184
Construction and land development
Allowance for loan losses by portfolio segment [Roll Forward]
Beginning balance	115
Provision (credit) for loan losses	(11)
Ending balance	104
Consumer
Allowance for loan losses by portfolio segment [Roll Forward]
Beginning balance	2	1
Provision (credit) for loan losses	7
Ending balance	$ 9	$ 1

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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- Definition

Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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