SECURITIES, Available for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Available for sale [Abstract]
Amortized cost	$ 700,850	$ 706,437
Gross unrealized gains	26,384	5,412
Gross unrealized losses	(905)	(4,199)
Fair value	726,329	707,650
U.S. Government and Agencies [Member]
Available for sale [Abstract]
Amortized cost	4,750	4,750
Gross unrealized gains	35	57
Gross unrealized losses	0	0
Fair value	4,785	4,807
State and Municipal [Member]
Available for sale [Abstract]
Amortized cost	242,010	94,512
Gross unrealized gains	8,248	1,091
Gross unrealized losses	(428)	(911)
Fair value	249,830	94,692
Mortgage-backed Securities [Member]
Available for sale [Abstract]
Amortized cost	309,227	463,899
Gross unrealized gains	15,778	3,727
Gross unrealized losses	0	(3,110)
Fair value	325,005	464,516
Collateralized Mortgage Obligations [Member]
Available for sale [Abstract]
Amortized cost	107,249	107,443
Gross unrealized gains	0	15
Gross unrealized losses	(472)	(169)
Fair value	106,777	107,289
Asset-backed and Other Amortizing Securities [Member]
Available for sale [Abstract]
Amortized cost	32,614	35,833
Gross unrealized gains	2,313	522
Gross unrealized losses	0	(9)
Fair value	34,927	$ 36,346
Other Securities [Member]
Available for sale [Abstract]
Amortized cost	5,000
Gross unrealized gains	10
Gross unrealized losses	(5)
Fair value	$ 5,005

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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Amortized cost of 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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