STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of option activity

A summary of option activity for the six months ended June 30, 2017 is as follows:

	Number of Shares		Weighted Average Exercise Price
Outstanding at December 31, 2016	605,077		$	34.49
Granted	47,150		3.94
Exercised	—		—
Forfeited	(2,534	)	5.55
Expired	(23,352	)	417.84
Outstanding at June 30, 2017	626,341		$	18.01
Options vested and expected to vest at June 30, 2017	626,341		$	18.01
Options exercisable at June 30, 2017	239,253		$	38.60

Schedule of restricted stock units activity

A summary of RSU activity for the six months ended June 30, 2017 is as follows:

	Number of RSUs		Weighted Average Remaining Contractual Life (years)
Outstanding at December 31, 2016	21,732
Awarded	25,337
Common stock issued upon vesting	(32,539	)
Forfeited	(163	)
Outstanding at June 30, 2017	14,367		1.25
Weighted average remaining recognition period	1.75