STOCK BASED COMPENSATION, SUMMARY OF OPTION ACTIVITY - (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Stock Option
Stock-based compensation (in dollars)	$ 68	$ 150	$ 135	$ 456
Stock Options
Summary of option activity - Shares
Outstanding at the beginning of year (in shares)			54,849
Granted (in shares)			90,000
Expired (in shares)			(2,500)
Cancelled/Forfeited (in shares)			(17,459)
Outstanding at the end of period (in shares)	124,890		124,890		54,849
Vested at the end of period (in shares)			27,278
Summary of option activity - Weighted Average Exercise Price
Outstanding at the beginning of year (in dollars per shares)			$ 100.83
Granted (in dollars per shares)			1.53
Expired (in dollars per shares)			231.00
Cancelled/Forfeited (in dollars per shares)			40.12
Outstanding at the end of period (in dollars per shares)	$ 35.15		35.15		$ 100.83
Vested at the end of period (in dollars per share)	$ 136.27		$ 136.27
Option activity disclosures
Weighted Average Remaining Contractual Term - Outstanding			8 years 8 months 1 day		7 years 3 months 26 days
Weighted Average Remaining Contractual Term - Vested			6 years 4 days
Stock Option
Weighted average grant-date fair value of options granted			$ 1.25
Total fair value of options vested	$ 33		$ 69
Stock-based compensation (in dollars)	43		84
Total unrecognized compensation expense	$ 262		$ 262
Period for unrecognized compensation expense is estimated to be recognized			1 year 11 months 19 days