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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, 2023	Dec. 31, 2022
Securities Available for Sale:
Amortized Cost	$ 653,894	$ 661,045
Gross Unrealized Gains	61	28
Gross Unrealized Losses	(97,689)	(106,425)
Fair Value	556,266	554,648
Securities Held to Maturity:
Amortized Cost	111,609	102,291
Gross Unrealized Losses	(13,642)	(15,104)
Fair Value	97,967	87,187
U.S. Government-Sponsored Agencies [Member]
Securities Available for Sale:
Amortized Cost	244,779	244,774
Gross Unrealized Losses	(49,992)	(54,232)
Fair Value	194,787	190,542
Securities Held to Maturity:
Amortized Cost	40,000	40,000
Gross Unrealized Losses	(4,001)	(4,563)
Fair Value	35,999	35,437
Mortgage-Backed Securities-Residential [Member]
Securities Available for Sale:
Amortized Cost	366,852	372,471
Gross Unrealized Gains	61	27
Gross Unrealized Losses	(42,726)	(46,760)
Fair Value	324,187	325,738
Securities Held to Maturity:
Amortized Cost	71,609	62,291
Gross Unrealized Losses	(9,641)	(10,541)
Fair Value	61,968	51,750
SBA Pool Securities [Member]
Securities Available for Sale:
Amortized Cost	30,403	31,934
Gross Unrealized Gains		1
Gross Unrealized Losses	(3,951)	(4,508)
Fair Value	26,452	27,427
State and Political Subdivisions [Member]
Securities Available for Sale:
Amortized Cost	1,860	1,866
Gross Unrealized Losses	(8)	(17)
Fair Value	1,852	1,849
Corporate Bond [Member]
Securities Available for Sale:
Amortized Cost	10,000	10,000
Gross Unrealized Losses	(1,012)	(908)
Fair Value	$ 8,988	$ 9,092

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