INVESTMENT SECURITIES - Amortized Cost and Fair Values of AFS Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 916,830	$ 864,920
Gross Unrealized Gains	5,767	1,766
Gross Unrealized Losses	37,224	36,975
Allowance for Credit Losses	0	0
Fair Value	885,373	829,711
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	20,036	20,043
Gross Unrealized Gains	0	0
Gross Unrealized Losses	1,395	1,980
Allowance for Credit Losses	0	0
Fair Value	18,641	18,063
U.S. Government Agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,375	2,953
Gross Unrealized Gains	76	100
Gross Unrealized Losses	0	0
Allowance for Credit Losses	0	0
Fair Value	2,451	3,053
States and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	220,481	220,418
Gross Unrealized Gains	125	10
Gross Unrealized Losses	24,655	20,400
Allowance for Credit Losses	0	0
Fair Value	195,951	200,028
GSE residential MBSs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	195,595	155,793
Gross Unrealized Gains	1,559	52
Gross Unrealized Losses	2,546	4,297
Allowance for Credit Losses	0	0
Fair Value	194,608	151,548
GSE commercial MBSs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	7,386	8,570
Gross Unrealized Gains	119	243
Gross Unrealized Losses	16	21
Allowance for Credit Losses	0	0
Fair Value	7,489	8,792
GSE residential CMOs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	342,909	331,016
Gross Unrealized Gains	3,401	485
Gross Unrealized Losses	5,561	6,809
Allowance for Credit Losses	0	0
Fair Value	340,749	324,692
Non-agency CMOs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	42,775	35,548
Gross Unrealized Gains	182	202
Gross Unrealized Losses	1,661	2,466
Allowance for Credit Losses	0	0
Fair Value	41,296	33,284
Asset-backed
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	83,117	88,450
Gross Unrealized Gains	269	655
Gross Unrealized Losses	1,390	1,002
Allowance for Credit Losses	0	0
Fair Value	81,996	88,103
Corporate debt
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,941	1,935
Gross Unrealized Gains	36	19
Gross Unrealized Losses	0	0
Allowance for Credit Losses	0	0
Fair Value	1,977	1,954
Other
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	215	194
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Allowance for Credit Losses	0	0
Fair Value	$ 215	$ 194

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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