INVESTMENT SECURITIES (Schedule of Amortized Cost and Approximate Fair Value of Securities Available for Sale) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Securities Available for Sale:
Amortized Cost	$ 634,390	$ 809,687
Gross Unrealized Gains	109	3,927
Gross Unrealized Losses	(77,708)	(16,861)
Fair Value	556,791	796,753
Securities Held to Maturity:
Amortized Cost	105,048	108,680
Gross Unrealized Gains		74
Gross Unrealized Losses	(9,406)	(294)
Fair Value	95,642	108,460
U.S. Government-Sponsored Agencies [Member]
Securities Available for Sale:
Amortized Cost	244,765	280,045
Gross Unrealized Losses	(38,642)	(7,824)
Fair Value	206,123	272,221
Securities Held to Maturity:
Amortized Cost	40,000	40,000
Gross Unrealized Gains		7
Gross Unrealized Losses	(2,775)	(25)
Fair Value	37,225	39,982
Mortgage-Backed Securities-Residential [Member]
Securities Available for Sale:
Amortized Cost	342,272	481,062
Gross Unrealized Gains	101	3,849
Gross Unrealized Losses	(35,545)	(7,937)
Fair Value	306,828	476,974
Securities Held to Maturity:
Amortized Cost	65,048	68,680
Gross Unrealized Gains		67
Gross Unrealized Losses	(6,631)	(269)
Fair Value	58,417	68,478
SBA Pool Securities [Member]
Securities Available for Sale:
Amortized Cost	35,836	40,649
Gross Unrealized Gains	7	12
Gross Unrealized Losses	(3,260)	(1,100)
Fair Value	32,583	39,561
State and Political Subdivisions [Member]
Securities Available for Sale:
Amortized Cost	4,017	5,431
Gross Unrealized Gains	1	45
Gross Unrealized Losses	(5)
Fair Value	4,013	5,476
Corporate Bond [Member]
Securities Available for Sale:
Amortized Cost	7,500	2,500
Gross Unrealized Gains		21
Gross Unrealized Losses	(256)
Fair Value	$ 7,244	$ 2,521

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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