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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, 2022	Dec. 31, 2021
Securities Available for Sale:
Amortized Cost	$ 606,462	$ 809,687
Gross Unrealized Gains	42	3,927
Gross Unrealized Losses	(108,624)	(16,861)
Fair Value	497,880	796,753
Securities Held to Maturity:
Amortized Cost	103,551	108,680
Gross Unrealized Gains		74
Gross Unrealized Losses	(15,694)	(294)
Fair Value	87,857	108,460
U.S. Government-Sponsored Agencies [Member]
Securities Available for Sale:
Amortized Cost	244,770	280,045
Gross Unrealized Losses	(55,360)	(7,824)
Fair Value	189,410	272,221
Securities Held to Maturity:
Amortized Cost	40,000	40,000
Gross Unrealized Gains		7
Gross Unrealized Losses	(4,869)	(25)
Fair Value	35,131	39,982
Mortgage-Backed Securities-Residential [Member]
Securities Available for Sale:
Amortized Cost	315,541	481,062
Gross Unrealized Gains	40	3,849
Gross Unrealized Losses	(48,034)	(7,937)
Fair Value	267,547	476,974
Securities Held to Maturity:
Amortized Cost	63,551	68,680
Gross Unrealized Gains		67
Gross Unrealized Losses	(10,825)	(269)
Fair Value	52,726	68,478
SBA Pool Securities [Member]
Securities Available for Sale:
Amortized Cost	33,538	40,649
Gross Unrealized Gains	2	12
Gross Unrealized Losses	(4,419)	(1,100)
Fair Value	29,121	39,561
State and Political Subdivisions [Member]
Securities Available for Sale:
Amortized Cost	2,613	5,431
Gross Unrealized Gains		45
Gross Unrealized Losses	(29)
Fair Value	2,584	5,476
Corporate Bond [Member]
Securities Available for Sale:
Amortized Cost	10,000	2,500
Gross Unrealized Gains		21
Gross Unrealized Losses	(782)
Fair Value	$ 9,218	$ 2,521

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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