SECURITIES - Available-for-sale Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Available-for-sale Securities
Available-for-sale securities, amortized cost	$ 505,440	$ 561,794
Available-for-sale securities, gross unrealized holding gains	114	321
Available-for-sale securities, gross unrealized holding losses	(76,416)	(64,082)
Available-for-sale debt securities, at fair value	429,138	498,033
Obligations of the U.S. Treasury
Available-for-sale Securities
Available-for-sale securities, amortized cost	33,938	35,166
Available-for-sale securities, gross unrealized holding gains	0	0
Available-for-sale securities, gross unrealized holding losses	(3,381)	(3,330)
Available-for-sale debt securities, at fair value	30,557	31,836
Obligations of U.S. Government agencies
Available-for-sale Securities
Available-for-sale securities, amortized cost	21,372	25,938
Available-for-sale securities, gross unrealized holding gains	0	0
Available-for-sale securities, gross unrealized holding losses	(2,576)	(2,508)
Available-for-sale debt securities, at fair value	18,796	23,430
Bank holding company debt securities
Available-for-sale Securities
Available-for-sale securities, amortized cost	28,950	28,945
Available-for-sale securities, gross unrealized holding gains	0	0
Available-for-sale securities, gross unrealized holding losses	(6,639)	(3,559)
Available-for-sale debt securities, at fair value	22,311	25,386
Obligations Of States And Political Subdivisions Tax Exempt
Available-for-sale Securities
Available-for-sale securities, amortized cost	123,598	146,149
Available-for-sale securities, gross unrealized holding gains	114	319
Available-for-sale securities, gross unrealized holding losses	(19,259)	(13,845)
Available-for-sale debt securities, at fair value	104,453	132,623
Obligations Of States And Political Subdivisions Taxable
Available-for-sale Securities
Available-for-sale securities, amortized cost	65,408	68,488
Available-for-sale securities, gross unrealized holding gains	0	0
Available-for-sale securities, gross unrealized holding losses	(11,951)	(11,676)
Available-for-sale debt securities, at fair value	53,457	56,812
Residential Passthrough Securities
Available-for-sale Securities
Available-for-sale securities, amortized cost	109,102	112,782
Available-for-sale securities, gross unrealized holding gains	0	0
Available-for-sale securities, gross unrealized holding losses	(14,633)	(12,841)
Available-for-sale debt securities, at fair value	94,469	99,941
Residential Collateralized Mortgage Obligations
Available-for-sale Securities
Available-for-sale securities, amortized cost	38,267	44,868
Available-for-sale securities, gross unrealized holding gains	0	0
Available-for-sale securities, gross unrealized holding losses	(4,870)	(4,572)
Available-for-sale debt securities, at fair value	33,397	40,296
Commercial Mortgage Backed Securities
Available-for-sale Securities
Available-for-sale securities, amortized cost	76,627	91,388
Available-for-sale securities, gross unrealized holding gains	0	0
Available-for-sale securities, gross unrealized holding losses	(12,955)	(11,702)
Available-for-sale debt securities, at fair value	63,672	79,686
Private label commercial mortgage-backed securities
Available-for-sale Securities
Available-for-sale securities, amortized cost	8,178	8,070
Available-for-sale securities, gross unrealized holding gains	0	2
Available-for-sale securities, gross unrealized holding losses	(152)	(49)
Available-for-sale debt securities, at fair value	$ 8,026	$ 8,023

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost excluding accrued interest, before allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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