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SECURITIES - Securities Available for Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Amortized cost and estimated fair value of debt securities available-for-sale
Amortized Cost	$ 617,271	$ 669,092
Gross Unrealized Gains	49	81
Gross Unrealized Losses	85,878	85,180
Allowance for Credit Losses	0	0
Estimated Fair Value	531,442	583,993
Amortized Cost
Within one year	4,633
After one, but within five years	73,487
After five, but within ten years	43,336
After ten years	1,233
Total	617,271	669,092
Fair Value
Within one year	4,522
After one, but within five years	69,676
After five, but within ten years	39,075
After ten years	1,154
Total	531,442	583,993
U.S. treasury notes and bonds
Amortized cost and estimated fair value of debt securities available-for-sale
Amortized Cost	59,880	59,812
Gross Unrealized Gains	0	0
Gross Unrealized Losses	2,974	4,480
Allowance for Credit Losses	0	0
Estimated Fair Value	56,906	55,332
Fair Value
Total	56,906	55,332
Mortgage-backed securities, residential
Amortized cost and estimated fair value of debt securities available-for-sale
Amortized Cost	441,191	476,240
Gross Unrealized Gains	14	6
Gross Unrealized Losses	75,271	72,422
Allowance for Credit Losses	0	0
Estimated Fair Value	365,934	403,824
Amortized Cost
Without single maturity date	441,191
Fair Value
Without single maturity date	365,934
Total	365,934	403,824
Obligations of states and political subdivisions
Amortized cost and estimated fair value of debt securities available-for-sale
Amortized Cost	37,059	39,503
Gross Unrealized Gains	0	0
Gross Unrealized Losses	1,554	817
Allowance for Credit Losses	0	0
Estimated Fair Value	35,505	38,686
Fair Value
Total	35,505	38,686
Corporate bonds and notes
Amortized cost and estimated fair value of debt securities available-for-sale
Amortized Cost	25,750	25,750
Gross Unrealized Gains	0	0
Gross Unrealized Losses	3,734	5,081
Allowance for Credit Losses	0	0
Estimated Fair Value	22,016	20,669
Fair Value
Total	22,016	20,669
SBA loan pools
Amortized cost and estimated fair value of debt securities available-for-sale
Amortized Cost	53,391	67,787
Gross Unrealized Gains	35	75
Gross Unrealized Losses	2,345	2,380
Allowance for Credit Losses	0	0
Estimated Fair Value	51,081	65,482
Amortized Cost
Without single maturity date	53,391
Fair Value
Without single maturity date	51,081
Total	$ 51,081	$ 65,482

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- Definition

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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