INCOME TAXES (Reconciliation of statutory federal income tax rate) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
INCOME TAXES
Pretax income at statutory, amount									$ 20,349	$ 18,810	$ 12,163
Pretax income at statutory rates									21.00%	21.00%	21.00%
State and local taxes, net of federal income tax benefit, amount									$ 9,544	$ 9,904	$ 5,828
State and local taxes, net of federal income tax benefit, rate									9.85%	11.06%	10.06%
Nondeductible expenses, amount									$ 8,175	$ 680	$ 457
Nondeductible expenses, rate									8.44%	0.76%	0.79%
Stock options, amount									$ (302)
Stock options, rate									(0.31%)
Excess tax deduction on equity awards, amount										$ (467)	$ (59)
Excess tax deduction on equity awards, rate										(0.52%)	(0.10%)
Tax-exempt income, net amount									$ (106)	$ (51)
Tax-exempt income, net rate									(0.11%)	(0.06%)
Other, amount									$ (187)	$ 139	$ 63
Other, rate									(0.20%)	0.15%	0.11%
Effective income tax expense, amount	$ 9,021	$ 10,991	$ 10,442	$ 7,019	$ 9,165	$ 7,994	$ 6,229	$ 5,627	$ 37,473	$ 29,015	$ 18,452
Effective income tax expense, rate									38.67%	32.39%	31.86%