BORROWED FUNDS - Short-term borrowings (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
BORROWED FUNDS AND SUBORDINATED DEBT
Short-term borrowings	$ 33,874,000	$ 80,062,000
FHLB-Pittsburgh borrowings
BORROWED FUNDS AND SUBORDINATED DEBT
Short-term borrowings	31,500,000	77,000,000
FHLB-Pittsburgh borrowings \| Federal Home Loan Bank of Pittsburgh
BORROWED FUNDS AND SUBORDINATED DEBT
Short-term borrowings	25,000,000
Customer repurchase agreements
BORROWED FUNDS AND SUBORDINATED DEBT
Short-term borrowings	$ 2,374,000	$ 3,062,000

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Name:	us-gaap_ShortTermBorrowings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant