SHAREHOLDERS' EQUITY - Components of accumulated other comprehensive income, net of tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
SHAREHOLDERS' EQUITY
Beginning balance accumulated other comprehensive (loss) income	$ (38,733)	$ (46,418)
Net unrealized gain (loss) on available for sale securities, net of tax	1,875	8,042	$ (45,600)
(Loss) gain from unfunded post-retirement benefit obligation, net of tax	(29)	(357)	1,013
Ending balance accumulated other comprehensive (loss) income	$ (36,887)	$ (38,733)	$ (46,418)