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Equity (Tables)

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Summary of Stock Option Plans

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

		Number of Options (in shares)				Weighted Average Exercise Price Per Share				Weighted Average Remaining Contractual Life				Aggregate Intrinsic Value
Outstanding at December 31, 2016			2,050,369			$	3.62
Granted			90,000				0.25
Exercised			—
Forfeited or expired			(675,380	)		$	3.45
Outstanding at June 30, 2017			1,464,989			$	3.50				3.5 years			$	8
Exercisable at June 30, 2017			1,381,654			$	3.67				3.3 years			$	6

Schedule of Stock Options Fair Value Assumptions Estimated Using Black-Scholes Pricing Model

The fair value of the options granted was estimated on the grant date using the Black-Scholes option-pricing model with the following weighted average assumptions:

Risk-free interest rate			2.2	%
Expected term of options			6.6 years
Expected annual volatility			83	%
Expected dividend yield			—	%

Summary of Warrant Activity

The Company previously issued warrants at exercise prices equal to or greater than market value of the Company’s common stock at the date of issuance. A summary of warrant activity follows:

		Number of Warrants (in shares)				Weighted Average Exercise Price Per Share				Weighted Average Remaining Contractual Life
Outstanding at December 31, 2016			2,654,423			$	1.46
Granted			—				—
Exercised			—				—
Forfeited or expired			—				—
Outstanding at June 30, 2017			2,654,423			$	1.46				2.7 years