INCOME TAXES, Effective Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Effective tax rate reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%
Increase (reduction) in taxes resulting from [Abstract]
Tax-exempt interest	(1.10%)	(1.50%)	(1.50%)
State income taxes, net of federal benefit	3.60%	3.00%	2.50%
Stock-based compensation	(0.90%)	(0.80%)	(1.60%)
Federal tax credits	(1.00%)	(1.30%)	(1.30%)
Other, net	(0.20%)	(0.30%)	0.10%
Effective income tax rate	21.40%	20.10%	19.20%