INVESTMENT SECURITIES (Unrealized Losses on Investment Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Available-for-sale securities
Less Than 12 Months, Fair Value	$ 530,022	$ 97,158
Less Than 12 Months, Unrealized Losses	4,452	328
Greater Than 12 Months, Fair Value	213,371	225,632
Greater Than 12 Months, Unrealized Losses	14,429	14,305
Total Fair Value	743,393	322,790
Total Unrealized Losses	18,881	14,633
Held-to-maturity, Debt Securities
Less Than 12 Months, Fair Value	156,316	33,589
Less Than 12 Months, Unrealized Losses	1,640	98
Greater Than 12 Months, Fair Value	98,703	235,530
Greater Than 12 Months, Unrealized Losses	8,896	8,958
Total Fair Value	255,019	269,119
Total Unrealized Losses	10,536	9,056
U.S. Government Treasury [Member]
Available-for-sale securities
Less Than 12 Months, Fair Value	455,403	31,319
Less Than 12 Months, Unrealized Losses	3,841	22
Greater Than 12 Months, Fair Value	5,968	8,902
Greater Than 12 Months, Unrealized Losses	43	149
Total Fair Value	461,371	40,221
Total Unrealized Losses	3,884	171
Held-to-maturity, Debt Securities
Less Than 12 Months, Fair Value	0	0
Less Than 12 Months, Unrealized Losses	0	0
Greater Than 12 Months, Fair Value	8,578	129,268
Greater Than 12 Months, Unrealized Losses	8	514
Total Fair Value	8,578	129,268
Total Unrealized Losses	8	514
U.S. Government Agency [Member]
Available-for-sale securities
Less Than 12 Months, Fair Value	73,602	62,809
Less Than 12 Months, Unrealized Losses	597	182
Greater Than 12 Months, Fair Value	92,621	91,760
Greater Than 12 Months, Unrealized Losses	2,184	2,302
Total Fair Value	166,223	154,569
Total Unrealized Losses	2,781	2,484
States and Political Subdivisions [Member]
Available-for-sale securities
Less Than 12 Months, Fair Value	965	3,030
Less Than 12 Months, Unrealized Losses	14	124
Greater Than 12 Months, Fair Value	32,331	30,705
Greater Than 12 Months, Unrealized Losses	2,033	1,921
Total Fair Value	33,296	33,735
Total Unrealized Losses	2,047	2,045
Mortgage-Backed Securities [Member]
Available-for-sale securities
Less Than 12 Months, Fair Value	52	0
Less Than 12 Months, Unrealized Losses	0	0
Greater Than 12 Months, Fair Value	48,562	51,932
Greater Than 12 Months, Unrealized Losses	8,000	7,697
Total Fair Value	48,614	51,932
Total Unrealized Losses	8,000	7,697
Held-to-maturity, Debt Securities
Less Than 12 Months, Fair Value	156,316	33,589
Less Than 12 Months, Unrealized Losses	1,640	98
Greater Than 12 Months, Fair Value	90,125	106,262
Greater Than 12 Months, Unrealized Losses	8,888	8,444
Total Fair Value	246,441	139,851
Total Unrealized Losses	10,528	8,542
Corporate Debt Securities [Member]
Available-for-sale securities
Less Than 12 Months, Fair Value	0	0
Less Than 12 Months, Unrealized Losses	0	0
Greater Than 12 Months, Fair Value	33,889	42,333
Greater Than 12 Months, Unrealized Losses	2,169	2,236
Total Fair Value	33,889	42,333
Total Unrealized Losses	$ 2,169	$ 2,236

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