STOCK OPTIONS - Stock option activity (Details) - 2008 Stock Option Plan - $ / shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Shares
Outstanding at beginning of period	147,150	147,150	173,050
Exercised			(11,200)
Forfeited	(1,200)		(14,700)
Outstanding at end of period	145,950	147,150	147,150
Exercisable at end of period	145,950	147,150	147,150
Weighted Average Exercise Price (in $ per share)
Outstanding at beginning of period (in dollars per share)	$ 2.06	$ 2.06	$ 2.06
Exercised			1.23
Forfeited	2.75		2.75
Outstanding at end of period (in dollars per share)	2.05	2.06	2.06
Exercisable at end of period	$ 2.05	$ 2.06	$ 2.06