INVESTMENT SECURITIES (Investment Securities at an Unrealized Loss Position) (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Available-for-sale:
Less than 12 months, Fair Value	$ 180,628	$ 43,885
Less Than 12 Months, Unrecognized Losses	(1,106)	(159)
12 Month or Longer, Fair Value	423,170	445,453
12 Month or Longer, Unrecognized Losses	(77,754)	(75,950)
Total Fair Value	603,798	489,338
Total, Unrealized Losses	(78,860)	(76,109)
Held-to-maturity:
Less Than 12 Months, Fair Value	0	0
Less Than 12 Months, Unrecognized Losses	0	0
12 Month or Longer, Fair Value	466,533	485,696
12 Month or Longer, Unrecognized Losses	(70,338)	(66,677)
Total Fair Value	466,533	485,696
Total Unrecognized Losses	(70,338)	(66,677)
States and political subdivisions
Available-for-sale:
Less than 12 months, Fair Value	7,248	2,196
Less Than 12 Months, Unrecognized Losses	(95)	(12)
12 Month or Longer, Fair Value	102,373	105,922
12 Month or Longer, Unrecognized Losses	(24,502)	(24,165)
Total Fair Value	109,621	108,118
Total, Unrealized Losses	(24,597)	(24,177)
Held-to-maturity:
Less Than 12 Months, Fair Value	0	0
Less Than 12 Months, Unrecognized Losses	0	0
12 Month or Longer, Fair Value	35,504	34,699
12 Month or Longer, Unrecognized Losses	(6,334)	(7,226)
Total Fair Value	35,504	34,699
Total Unrecognized Losses	(6,334)	(7,226)
Corporate securities
Available-for-sale:
Less than 12 months, Fair Value	4,958
Less Than 12 Months, Unrecognized Losses	(42)
12 Month or Longer, Fair Value	0
12 Month or Longer, Unrecognized Losses	0
Total Fair Value	4,958
Total, Unrealized Losses	(42)
U.S. Treasury and other government-sponsored entities and agencies
Available-for-sale:
Less than 12 months, Fair Value	43,801	20,687
Less Than 12 Months, Unrecognized Losses	(200)	(48)
12 Month or Longer, Fair Value	10,808	11,976
12 Month or Longer, Unrecognized Losses	(1,330)	(1,245)
Total Fair Value	54,609	32,663
Total, Unrealized Losses	(1,530)	(1,293)
Collateralized loan obligations
Available-for-sale:
Less than 12 months, Fair Value	62,689	21,002
Less Than 12 Months, Unrecognized Losses	(197)	(99)
12 Month or Longer, Fair Value	10,005	10,020
12 Month or Longer, Unrecognized Losses	(7)	(66)
Total Fair Value	72,694	31,022
Total, Unrealized Losses	(204)	(165)
Residential - U.S. government-sponsored entities and agencies
Available-for-sale:
Less than 12 months, Fair Value	57,690	0
Less Than 12 Months, Unrecognized Losses	(505)	0
12 Month or Longer, Fair Value	245,291	261,335
12 Month or Longer, Unrecognized Losses	(39,759)	(38,200)
Total Fair Value	302,981	261,335
Total, Unrealized Losses	(40,264)	(38,200)
Held-to-maturity:
Less Than 12 Months, Fair Value	0	0
Less Than 12 Months, Unrecognized Losses	0	0
12 Month or Longer, Fair Value	431,029	450,997
12 Month or Longer, Unrecognized Losses	(64,004)	(59,451)
Total Fair Value	431,029	450,997
Total Unrecognized Losses	(64,004)	(59,451)
Residential - Non-government agencies
Available-for-sale:
Less than 12 months, Fair Value	4,242	0
Less Than 12 Months, Unrecognized Losses	(67)	0
12 Month or Longer, Fair Value	6,543	6,954
12 Month or Longer, Unrecognized Losses	(719)	(722)
Total Fair Value	10,785	6,954
Total, Unrealized Losses	(786)	(722)
Commercial - U.S. government-sponsored entities and agencies
Available-for-sale:
Less than 12 months, Fair Value	0	0
Less Than 12 Months, Unrecognized Losses	0	0
12 Month or Longer, Fair Value	48,150	49,246
12 Month or Longer, Unrecognized Losses	(11,437)	(11,552)
Total Fair Value	48,150	49,246
Total, Unrealized Losses	$ (11,437)	$ (11,552)

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