INCOME TAXES - Federal statutory rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
INCOME TAXES
Tax at Federal statutory rate	$ 44,502	$ 31,115	$ 11,546
State and local taxes, net of federal income tax benefit	13,699	11,601	567
Benefit plan differences	(127)	(107)	(240)
Adjustments for prior period returns and tax items	1,812	(238)	125
Investment in BOLI	2,173	1,485	1,020
Equity based compensation	(141)	(301)	96
Salaries deduction limitation	2,054	3,419	1,428
Transaction costs		181	256
Other, net	(267)	(15)	(92)
Total	$ 59,359	$ 44,170	$ 12,666
Effective tax rate	28.01%	29.81%	23.04%