SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Other (Details)	3 Months Ended
Sep. 30, 2023 USD ($) Office	Jul. 01, 2023 USD ($)	Jun. 30, 2023 USD ($)
Impact of Recent Accounting Pronouncements
Allowance for credit losses	$ 21,069,000		$ 22,469,000
Reserve for unfunded loan commitments	1,458,000
Retained earnings	$ 176,964,000		173,038,000
Nature of Operations and Principals of Consolidation
Number of offices in Capital Region of New York \| Office	23
Cumulative effect of change in accounting principle - Current Expected Credit Losses
Impact of Recent Accounting Pronouncements
Allowance for credit losses		$ (2,300,000)	(2,311,000)
Reserve for unfunded loan commitments		1,600,000	$ 1,624,000
Retained earnings		507,000
Deferred income taxes		$ (180,000)

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.

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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

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