SUMMARY OF ORGANIZATION - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended						9 Months Ended
	Aug. 24, 2023	May 24, 2023	Feb. 24, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
SUMMARY OF ORGANIZATION
Total assets				$ 7,884,285						$ 7,884,285		$ 6,461,717
Loans, excluding loans held for sale										5,036,000
Deposits				6,480,025						6,480,025		5,494,404
Stockholders' equity				897,221	$ 899,446	$ 896,427	$ 621,471	$ 560,452	$ 590,440	897,221	$ 621,471	$ 646,663	$ 676,172
Net income				$ 24,360	$ 23,779	$ 16,271	$ 14,043	$ 15,753	$ 16,829	$ 64,410	$ 46,624
Dividends on common stock, per share (in dollars per share)	$ 0.23	$ 0.22	$ 0.21