FAIR VALUE - Carrying Amount and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
ASSETS
Debt securities available-for-sale	$ 368,607	$ 371,409
Debt securities held-to-maturity	371,735	367,388
Carrying Amount
ASSETS
Cash and cash equivalents	188,593	106,285
Debt securities available-for-sale	368,607	371,409
Debt securities held-to-maturity	402,300	404,765
Equity securities	9,416	9,615
Loans held for sale	448	231
Net loans receivable	4,257,316	4,231,742
FHLB and other restricted stock holdings and investments	31,194	30,715
Interest rate swaps	1,338	1,850
Accrued interest receivable	19,691	20,194
LIABILITIES
Deposits	(4,754,129)	(4,622,437)
Short-term borrowings	(102,083)	(132,396)
Subordinated notes and debentures	(104,660)	(104,584)
Interest rate swaps	(1,234)	(1,700)
Accrued interest payable	(2,850)	(1,839)
Total Fair Value
ASSETS
Cash and cash equivalents	188,593	106,285
Debt securities available-for-sale	368,607	371,409
Debt securities held-to-maturity	371,735	367,388
Equity securities	9,416	9,615
Loans held for sale	449	231
Net loans receivable	4,155,403	4,157,843
Interest rate swaps	1,338	1,850
Accrued interest receivable	19,691	20,194
LIABILITIES
Deposits	(4,754,697)	(4,621,764)
Short-term borrowings	(102,083)	(132,396)
Subordinated notes and debentures	(122,427)	(117,378)
Interest rate swaps	(1,234)	(1,700)
Accrued interest payable	(2,850)	(1,839)
Quoted Prices in Active Markets for Identical Assets (Level 1) | Total Fair Value
ASSETS
Cash and cash equivalents	188,593	106,285
Debt securities available-for-sale	0	0
Debt securities held-to-maturity	0	0
Equity securities	9,416	9,615
Loans held for sale	0	0
Net loans receivable	0	0
Interest rate swaps	0	0
Accrued interest receivable	0	0
LIABILITIES
Deposits	(4,212,282)	(4,175,976)
Short-term borrowings	0	0
Subordinated notes and debentures	0	0
Interest rate swaps	0	0
Accrued interest payable	0	0
Significant Other Observable Inputs (Level 2) | Total Fair Value
ASSETS
Cash and cash equivalents	0	0
Debt securities available-for-sale	368,607	371,409
Debt securities held-to-maturity	371,735	367,388
Equity securities	0	0
Loans held for sale	449	231
Net loans receivable	0	0
Interest rate swaps	1,338	1,850
Accrued interest receivable	2,928	2,867
LIABILITIES
Deposits	(542,415)	(445,788)
Short-term borrowings	(102,083)	(132,396)
Subordinated notes and debentures	(122,427)	(117,378)
Interest rate swaps	(1,234)	(1,700)
Accrued interest payable	(2,850)	(1,839)
Significant Unobservable Inputs (Level 3) | Total Fair Value
ASSETS
Cash and cash equivalents	0	0
Debt securities available-for-sale	0	0
Debt securities held-to-maturity	0	0
Equity securities	0	0
Loans held for sale	0	0
Net loans receivable	4,155,403	4,157,843
Interest rate swaps	0	0
Accrued interest receivable	16,763	17,327
LIABILITIES
Deposits	0	0
Short-term borrowings	0	0
Subordinated notes and debentures	0	0
Interest rate swaps	0	0
Accrued interest payable	$ 0	$ 0