STOCK BASED COMPENSATION, SUMMARY OF OPTION ACTIVITY - (Details) - Stock Options - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018
Summary of option activity - Shares
Outstanding at the beginning of year (in shares)	134,770
Granted (in shares)	3,000
Expired (in shares)	(3,473)
Cancelled/Forfeited (in shares)	(53,286)
Outstanding at the end of period (in shares)	81,011
Vested at the end of period (in shares)	52,998
Vested and expected to vest at the end of period (in shares)	81,011
Summary of option activity - Weighted Average Exercise Price
Outstanding at the beginning of year (in dollars per shares)	$ 164.29
Granted (in dollars per shares)	17.25
Expired (in dollars per shares)	261.96
Cancelled/Forfeited (in dollars per shares)	176.39
Outstanding at the end of period (in dollars per shares)	146.70
Vested at the end of period (in dollars per share)	175.14
Vested and expected to vest at the end of period (in dollars per share)	$ 146.70
Option activity disclosures
Weighted Average Remaining Contractual Term - Vested	6 years 3 months 15 days
Weighted Average Remaining Contractual Term - Vested and expected to vest	7 years 2 months 12 days
Aggregate Intrinsic Value - Vested (in dollars)	$ 11
Aggregate Intrinsic Value - Vested and expected to vest (in dollars)	$ 11
Stock Option
Weighted average grant-date fair value of options granted	$ 12.88
Total fair value of options vested	$ 684
Total unrecognized compensation expense	$ 1,596
Period for unrecognized compensation expense is estimated to be recognized	2 years 1 month 6 days