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INVESTMENT SECURITIES (Schedule of Amortized Cost and Approximate Fair Value of Securities Available for Sale) (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Securities Available for Sale:
Amortized Cost	$ 780,762	$ 841,472
Gross Unrealized Gains	1,233	3,801
Gross Unrealized Losses	(71,949)	(71,070)
Fair Value	710,046	774,203
Securities Held to Maturity:
Amortized Cost	79,478	95,862
Gross Unrealized Gains	0	23
Gross Unrealized Losses	(8,641)	(8,394)
Fair Value	70,837	87,491
U.S. Government-Sponsored Agencies [Member]
Securities Available for Sale:
Amortized Cost	219,838	244,833
Gross Unrealized Losses	(33,257)	(33,610)
Fair Value	186,581	211,223
Securities Held to Maturity:
Amortized Cost	25,000	40,000
Gross Unrealized Losses	(1,104)	(1,125)
Fair Value	23,896	38,875
Mortgage-Backed Securities-Residential [Member]
Securities Available for Sale:
Amortized Cost	526,784	561,794
Gross Unrealized Gains	1,055	3,551
Gross Unrealized Losses	(36,071)	(34,980)
Fair Value	491,768	530,365
Securities Held to Maturity:
Amortized Cost	54,478	55,862
Gross Unrealized Gains	0	23
Gross Unrealized Losses	(7,537)	(7,269)
Fair Value	46,941	48,616
SBA Pool Securities [Member]
Securities Available for Sale:
Amortized Cost	18,640	19,345
Gross Unrealized Losses	(2,220)	(2,133)
Fair Value	16,420	17,212
Corporate Bond [Member]
Securities Available for Sale:
Amortized Cost	15,500	15,500
Gross Unrealized Gains	178	250
Gross Unrealized Losses	(401)	(347)
Fair Value	$ 15,277	$ 15,403

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