INCOME TAXES (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Computed statutory federal income tax provision	$ 32,902	$ 32,096	$ 45,803
State taxes, net of federal tax benefit	$ 8,754	$ 8,147	$ 12,262
Effective Income Tax Rate Reconciliation, CARES Act, Percent	0.00%	(3.15%)	0.00%
Effective Income Tax Rate Reconciliation, CARES Act, Amount	$ 0	$ (4,809)	$ 0
Merger and other related costs (non-deductible)	630	0	582
Change in valuation allowance	26	0	17
New Markets Tax Credits	0	0	(2,675)
Increase in cash surrender value of life insurance	(1,405)	(1,345)	(1,144)
Effective Income Tax Rate Reconciliation, Tax Credit, Investment, Amount	(2,308)	(1,851)	(1,696)
Stock-based compensation	(372)	(1,067)	(824)
Nontaxable interest, net	(1,022)	(723)	(757)
Other, net	(1,522)	1,221	1,365
Total expense	$ 35,683	$ 31,669	$ 52,933
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Computed statutory federal income tax provision	21.00%	21.00%	21.00%
State taxes, net of federal tax benefit	5.59%	5.33%	5.63%
Merger and other related costs (non-deductible)	0.40%	0.00%	0.27%
Change in valuation allowance	0.02%	0.00%	0.01%
New Markets Tax Credits	0.00%	0.00%	(1.23%)
Increase in cash surrender value of life insurance	(0.90%)	(0.88%)	(0.52%)
Effective Income Tax Rate Reconciliation, Tax Credit, Investment, Percent	(1.47%)	(1.21%)	(0.78%)
Stock-based compensation	(0.24%)	(0.70%)	(0.38%)
Nontaxable interest, net	(0.65%)	(0.47%)	(0.35%)
Other, net	(0.97%)	0.80%	0.63%
Total expense	22.78%	20.72%	24.28%