INCOME TAXES - Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income before taxes	$ 84,660	$ 146,689	$ 101,894
Federal tax statutory rate	17,779	30,805	21,398
State tax - net of federal tax benefit	2,912	3,220	2,587
Tax-exempt investments	(3,908)	(2,049)	(1,849)
Stock-based compensation expense	121	(1,132)	(159)
Other	1,216	423	(73)
Total	$ 18,120	$ 31,267	$ 21,904
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal tax statutory rate	21.00%	21.00%	21.00%
State tax - net of federal tax benefit	3.44%	2.20%	2.54%
Tax-exempt investments	(4.62%)	(1.40%)	(1.81%)
Stock-based compensation expense	0.14%	(0.77%)	(0.16%)
Other	1.44%	0.29%	(0.07%)
Total	21.40%	21.32%	21.50%