STOCK BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2018

STOCK BASED COMPENSATION

Schedule of assumptions used principally in determining the fair value of options granted

	March 31,	December 31,
	2018	2017
Risk-free interest rate	2.45%	1.69 - 2.36%
Expected dividend yield	0%	0%
Expected term (employee grants)	5.27 Years	6.22 Years
Expected volatility	96.07%	104%

Summary of option activity

				Weighted
		Weighted		Average
		Average		Remaining	Aggregate
		Exercise		Contractual	Intrinsic
Options	Shares	Price		Term in Years	Value
Outstanding at December 31, 2017	134,770	$	164.29
Granted	3,000	$	17.25
Expired	(3,473)	$	261.96
Cancelled/Forfeited	(53,286)	$	176.39
Exercised	—	$	—
Outstanding at March 31, 2018	81,011	$	146.70	—	$	—
Vested at March 31, 2018	52,998	$	175.14	6.29	$	11
Vested and expected to vest at March 31, 2018	81,011	$	146.70	7.20	$	11

Summary of restricted stock unit activity

			Weighted-Average
	Number of Grants		Grant Date Fair Value
Unvested balance at December 31, 2017	20,000	$	25.70
Granted	—		—
Vested	—		—
Forfeited	(3,300)		31.25
Unvested balance at March 31, 2018	16,700	$	24.60