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INCOME TAXES - Income tax paid (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
INCOME TAXES
Federal	$ 5,000
Total	6,599	$ 9,863	$ 15,026
New Hampshire
INCOME TAXES
State and local	625
Massachusetts
INCOME TAXES
State and local	450
Maine
INCOME TAXES
State and local	320
All other states
INCOME TAXES
State and local	$ 204