STOCK BASED COMPENSATION - Summary of Stock Options Outstanding (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
STOCK BASED COMPENSATION
Number of stock options outstanding, Beginning of period	37,786	19,170
Number of stock options outstanding, Granted	149,801	20,942
Number of stock options outstanding, Expired	(2,533)	(1,777)
Number of stock options outstanding, Canceled or forfeited		(549)
Number of stock options outstanding, End of period	185,054	37,786
Number of stock options Exercisable, End of period	35,253	37,786
Weighted average exercise price, Beginning of period	$ 37.42	$ 80.00
Weighted average exercise price, Granted	1.67	19.25
Weighted average exercise price, Expired	93.80	78.00
Weighted average exercise price, Canceled or forfeited		19.25
Weighted average exercise price, End of period	7.70	37.42
Weighted average exercise price Exercisable, End of period	$ 33.37	$ 37.42