INCOME TAXES - Income Tax Expense Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Amount
Statutory tax expense	$ 27,474	$ 19,633	$ 18,433
Increase (decrease) in taxes from:
Tax exempt interest	(9,636)	(8,137)	(4,875)
BOLI	(549)	(536)	(484)
Share-based compensation	(392)	(70)	(167)
State business tax	366	329	217
Other, net	163	117	97
Income tax expense	$ 17,426	$ 11,336	$ 13,221
Percent of Pre-Tax Income
Statutory tax expense	21.00%	21.00%	21.00%
Increase (Decrease) in Taxes From:
Percent of Pre-tax income, Tax exempt interest	(7.40%)	(8.70%)	(5.50%)
Percent of Pre-tax income, Bank owned life insurance	(0.40%)	(0.60%)	(0.50%)
Percent of Pre-tax income, Share-based compensation	(0.30%)	(0.10%)	(0.20%)
Percent of Pre-tax income, State business tax	0.30%	0.40%	0.20%
Percent of Pre-tax income, Other net	0.10%	0.10%	0.10%
Percent of Pre-tax income, Income tax expense	13.30%	12.10%	15.10%