SECURITIES - Securities with Unrealized Losses Segregated by the Period in a Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
SECURITIES [Abstract]
Less than 12 months, Fair Value	$ 70,050	$ 73,696
Less than 12 months, Unrealized Loss	243	215
12 months or more, Fair Value	474,705	501,758
12 months or more, Unrealized Loss	70,389	91,560
Total, Fair Value	544,755	575,454
Total, Unrealized Loss	70,632	91,775
State and Municipal [Member]
SECURITIES [Abstract]
Less than 12 months, Fair Value	205	205
Less than 12 months, Unrealized Loss	0	1
12 months or more, Fair Value	165,618	171,306
12 months or more, Unrealized Loss	23,500	26,291
Total, Fair Value	165,823	171,511
Total, Unrealized Loss	23,500	26,292
Residential Mortgage-backed Securities [Member]
SECURITIES [Abstract]
Less than 12 months, Fair Value	3,132	8
Less than 12 months, Unrealized Loss	48	0
12 months or more, Fair Value	249,710	264,088
12 months or more, Unrealized Loss	42,033	56,925
Total, Fair Value	252,842	264,096
Total, Unrealized Loss	42,081	56,925
Commercial Mortgage-backed Securities [Member]
SECURITIES [Abstract]
Less than 12 months, Fair Value	3,503	0
Less than 12 months, Unrealized Loss	7	0
12 months or more, Fair Value	41,284	40,360
12 months or more, Unrealized Loss	3,976	6,241
Total, Fair Value	44,787	40,360
Total, Unrealized Loss	3,983	6,241
Commercial Collateralized Mortgage Obligations [Member]
SECURITIES [Abstract]
Less than 12 months, Fair Value	63,210	73,483
Less than 12 months, Unrealized Loss	188	214
12 months or more, Fair Value	0	0
12 months or more, Unrealized Loss	0	0
Total, Fair Value	63,210	73,483
Total, Unrealized Loss	188	214
Asset-backed and Other Amortizing Securities [Member]
SECURITIES [Abstract]
Less than 12 months, Fair Value	0	0
Less than 12 months, Unrealized Loss	0	0
12 months or more, Fair Value	13,132	14,581
12 months or more, Unrealized Loss	840	1,526
Total, Fair Value	13,132	14,581
Total, Unrealized Loss	840	1,526
Other Securities [Member]
SECURITIES [Abstract]
Less than 12 months, Fair Value	0	0
Less than 12 months, Unrealized Loss	0	0
12 months or more, Fair Value	4,961	11,423
12 months or more, Unrealized Loss	40	577
Total, Fair Value	4,961	11,423
Total, Unrealized Loss	$ 40	$ 577