PARENT COMPANY FINANCIAL INFORMATION - Condensed Statements of Income (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, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income:
Total interest income	$ 57,931	$ 53,874	$ 45,847	$ 42,741	$ 43,885	$ 44,435	$ 43,238	$ 45,187	$ 45,613	$ 46,338	$ 45,799	$ 41,598	$ 200,393	$ 176,745	$ 179,348
Expenses:
Interest on borrowed funds													8,599	7,619	7,056
Income (loss) before income taxes and equity in undistributed income of subsidiary													78,689	81,082	63,068
Income tax benefit	$ (4,012)	$ (3,924)	$ (3,457)	$ (4,377)	$ (3,873)	$ (4,429)	$ (3,820)	$ (4,793)	$ (3,642)	$ (2,993)	$ (2,241)	$ (1,687)	(15,770)	(16,915)	(10,563)
Net income													62,919	64,167	52,505
Parent Company
Income:
Interest and dividends													17	10	20
Dividend income													16,000	0	18,526
Other													2,667	111	892
Total interest income													18,684	121	19,438
Expenses:
Interest on borrowed funds													7,492	7,375	5,593
Legal and professional													593	941	1,014
Other													7,498	4,828	4,361
Operating Expenses, Total													15,583	13,144	10,968
Income (loss) before income taxes and equity in undistributed income of subsidiary													3,101	(13,023)	8,470
Income tax benefit													3,263	3,295	2,545
Income (loss) before equity in undistributed income of subsidiary													6,364	(9,728)	11,015
Equity in undistributed income of subsidiary													56,555	73,895	41,490
Net income													$ 62,919	$ 64,167	$ 52,505