GOODWILL AND INTANGIBLE ASSETS - Estimated annual amortization expense of core deposit intangibles (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CDI in demoninations of $250,000 or more
Core deposit intangibles amortization	$ 24	$ 78	$ 130	$ 180	$ 234	$ 288	$ 342	$ 461	$ 601