INVESTMENT SECURITIES - Amortized Cost and Fair Values of AFS Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 886,782	$ 864,920
Gross Unrealized Gains	4,489	1,766
Gross Unrealized Losses	35,815	36,975
Allowance for Credit Losses	0	0
Fair Value	855,456	829,711
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	20,040	20,043
Gross Unrealized Gains	0	0
Gross Unrealized Losses	1,623	1,980
Allowance for Credit Losses	0	0
Fair Value	18,417	18,063
U.S. Government Agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,712	2,953
Gross Unrealized Gains	88	100
Gross Unrealized Losses	0	0
Allowance for Credit Losses	0	0
Fair Value	2,800	3,053
States and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	219,924	220,418
Gross Unrealized Gains	93	10
Gross Unrealized Losses	22,911	20,400
Allowance for Credit Losses	0	0
Fair Value	197,106	200,028
GSE residential MBSs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	160,852	155,793
Gross Unrealized Gains	941	52
Gross Unrealized Losses	2,805	4,297
Allowance for Credit Losses	0	0
Fair Value	158,988	151,548
GSE commercial MBSs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	7,415	8,570
Gross Unrealized Gains	84	243
Gross Unrealized Losses	2	21
Allowance for Credit Losses	0	0
Fair Value	7,497	8,792
GSE residential CMOs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	354,375	331,016
Gross Unrealized Gains	2,634	485
Gross Unrealized Losses	5,602	6,809
Allowance for Credit Losses	0	0
Fair Value	351,407	324,692
Non-agency CMOs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	33,241	35,548
Gross Unrealized Gains	185	202
Gross Unrealized Losses	1,910	2,466
Allowance for Credit Losses	0	0
Fair Value	31,516	33,284
Asset-backed
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	86,077	88,450
Gross Unrealized Gains	429	655
Gross Unrealized Losses	962	1,002
Allowance for Credit Losses	0	0
Fair Value	85,544	88,103
Corporate debt
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,939	1,935
Gross Unrealized Gains	35	19
Gross Unrealized Losses	0	0
Allowance for Credit Losses	0	0
Fair Value	1,974	1,954
Other
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	207	194
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Allowance for Credit Losses	0	0
Fair Value	$ 207	$ 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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