SECURITIES - Securities Available for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Amortized cost and estimated fair value of debt securities available-for-sale
Amortized Cost	$ 331,286	$ 617,271
Gross Unrealized Gains	71	49
Gross Unrealized Losses	50,843	85,878
Allowance for Credit Losses	0	0
Estimated Fair Value	280,514	531,442
Amortized Cost
Within one year	620
After one, but within five years	5,041
After five, but within ten years	24,479
After ten years	266
Total	30,406
Total	331,286	617,271
Fair Value
Within one year	620
After one, but within five years	4,620
After five, but within ten years	22,227
After ten years	249
Total	27,716
Total	280,514	531,442
U.S. Treasury notes and bonds
Amortized cost and estimated fair value of debt securities available-for-sale
Amortized Cost		59,880
Gross Unrealized Gains		0
Gross Unrealized Losses		2,974
Allowance for Credit Losses		0
Estimated Fair Value		56,906
Fair Value
Total		56,906
Mortgage-backed securities, residential
Amortized cost and estimated fair value of debt securities available-for-sale
Amortized Cost	300,880	441,191
Gross Unrealized Gains	71	14
Gross Unrealized Losses	48,153	75,271
Allowance for Credit Losses	0	0
Estimated Fair Value	252,798	365,934
Amortized Cost
Without single maturity date	300,880
Fair Value
Without single maturity date	252,798
Total	252,798	365,934
Obligations of states and political subdivisions
Amortized cost and estimated fair value of debt securities available-for-sale
Amortized Cost	10,656	37,059
Gross Unrealized Gains	0	0
Gross Unrealized Losses	354	1,554
Allowance for Credit Losses	0	0
Estimated Fair Value	10,302	35,505
Fair Value
Total	10,302	35,505
Corporate bonds and notes
Amortized cost and estimated fair value of debt securities available-for-sale
Amortized Cost	19,750	25,750
Gross Unrealized Gains	0	0
Gross Unrealized Losses	2,336	3,734
Allowance for Credit Losses	0	0
Estimated Fair Value	17,414	22,016
Fair Value
Total	$ 17,414	22,016
SBA loan pools
Amortized cost and estimated fair value of debt securities available-for-sale
Amortized Cost		53,391
Gross Unrealized Gains		35
Gross Unrealized Losses		2,345
Allowance for Credit Losses		0
Estimated Fair Value		51,081
Fair Value
Total		$ 51,081