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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, 2023	Dec. 31, 2022
Securities Available for Sale:
Amortized Cost	$ 646,284	$ 661,045
Gross Unrealized Gains	9	28
Gross Unrealized Losses	(125,288)	(106,425)
Fair Value	521,005	554,648
Securities Held to Maturity:
Amortized Cost	108,940	102,291
Gross Unrealized Losses	(17,739)	(15,104)
Fair Value	91,201	87,187
U.S. Government-Sponsored Agencies [Member]
Securities Available for Sale:
Amortized Cost	244,789	244,774
Gross Unrealized Losses	(61,374)	(54,232)
Fair Value	183,415	190,542
Securities Held to Maturity:
Amortized Cost	40,000	40,000
Gross Unrealized Losses	(4,790)	(4,563)
Fair Value	35,210	35,437
Mortgage-Backed Securities-Residential [Member]
Securities Available for Sale:
Amortized Cost	362,595	372,471
Gross Unrealized Gains	9	27
Gross Unrealized Losses	(57,552)	(46,760)
Fair Value	305,052	325,738
Securities Held to Maturity:
Amortized Cost	68,940	62,291
Gross Unrealized Losses	(12,949)	(10,541)
Fair Value	55,991	51,750
SBA Pool Securities [Member]
Securities Available for Sale:
Amortized Cost	28,250	31,934
Gross Unrealized Gains		1
Gross Unrealized Losses	(4,516)	(4,508)
Fair Value	23,734	27,427
State and Political Subdivisions [Member]
Securities Available for Sale:
Amortized Cost	650	1,866
Gross Unrealized Losses	(1)	(17)
Fair Value	649	1,849
Corporate Bond [Member]
Securities Available for Sale:
Amortized Cost	10,000	10,000
Gross Unrealized Losses	(1,845)	(908)
Fair Value	$ 8,155	$ 9,092

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