SHARE-BASED COMPENSATION, SUMMARY OF OPTION ACTIVITY - (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Stock Option
Total fair value of options vested	$ 10	$ 24	$ 63	$ 80
Stock-based compensation (in dollars)	$ 95	45	$ 147	115
Stock Options
Summary of option activity - Shares
Outstanding at the beginning of year (in shares)			4,169
Granted (in shares)			360,000
Cancelled/Forfeited (in shares)			(147)
Outstanding at the end of period (in shares)	364,022		364,022		4,169
Vested and expected to vest at the end of period (in shares)	364,022		364,022
Vested and Exercisable at June 30, 2021	3,013		3,013
Summary of option activity - Weighted Average Exercise Price
Outstanding at the beginning of year (in dollars per shares)			$ 1,054.01
Granted (in dollars per shares)			1.10
Cancelled/Forfeited (in dollars per shares)			6,324.03
Outstanding at the end of period (in dollars per shares)	$ 10.61		10.61		$ 1,054.01
Vested and Exercisable at June 30, 2021	1,128.91		1,128.91
Vested and expected to vest at the end of period (in dollars per share)	$ 10.61		$ 10.61
Option activity disclosures
Weighted Average Remaining Contractual Term - Outstanding			9 years 8 months 4 days		7 years 2 months 4 days
Weighted Average Remaining Contractual Term - Vested and Exercisable			6 years 7 months 20 days
Stock Option
Weighted average grant-date fair value of options granted			$ 0.93
Stock-based compensation (in dollars)	$ 70	$ 21	$ 98	$ 64
Total unrecognized compensation expense	$ 297		$ 297
Period for unrecognized compensation expense is estimated to be recognized			1 year 5 months 15 days