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INVESTMENT SECURITIES (Schedule of Amortized Cost and Approximate Fair Value of Securities Available for Sale) (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Securities Available for Sale:
Amortized Cost	$ 828,282	$ 883,874
Gross Unrealized Gains	3,534	1,191
Gross Unrealized Losses	(75,238)	(100,521)
Fair Value	756,578	784,544
Securities Held to Maturity:
Amortized Cost	97,414	101,635
Gross Unrealized Gains	2
Gross Unrealized Losses	(9,157)	(12,985)
Fair Value	88,259	88,650
U.S. Government-Sponsored Agencies [Member]
Securities Available for Sale:
Amortized Cost	244,828	244,813
Gross Unrealized Losses	(35,524)	(47,899)
Fair Value	209,304	196,914
Securities Held to Maturity:
Amortized Cost	40,000	40,000
Gross Unrealized Losses	(1,429)	(2,666)
Fair Value	38,571	37,334
Mortgage-Backed Securities-Residential [Member]
Securities Available for Sale:
Amortized Cost	547,769	595,789
Gross Unrealized Gains	3,325	1,086
Gross Unrealized Losses	(36,861)	(48,263)
Fair Value	514,233	548,612
Securities Held to Maturity:
Amortized Cost	57,414	61,635
Gross Unrealized Gains	2
Gross Unrealized Losses	(7,728)	(10,319)
Fair Value	49,688	51,316
SBA Pool Securities [Member]
Securities Available for Sale:
Amortized Cost	20,185	27,772
Gross Unrealized Losses	(2,361)	(3,290)
Fair Value	17,824	24,482
Corporate Bond [Member]
Securities Available for Sale:
Amortized Cost	15,500	15,500
Gross Unrealized Gains	209	105
Gross Unrealized Losses	(492)	(1,069)
Fair Value	$ 15,217	$ 14,536

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