Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2018

Equity [Abstract]

Schedule of Warrant Activity

The following is a summary with respect to warrants outstanding and exercisable at December 31, 2018 and 2017 and activity during the years then ended:

	2018					2017
				Weighted					Weighted
				Average					Average
				Exercise					Exercise
	Warrants			Price		Warrants			Price
Outstanding at January 1:		2,645,090		$	10.98		2,812,515		$	11.20
Granted during the year		-			-		391,667			1.00
Lapsed/terminated		(1,214,974	)		19.20		(559,092	)		5.11
Outstanding at December 31:		1,430,116		$	4.00		2,645,090		$	10.98
Exercisable at December 31:		1,430,116		$	4.00		2,645,090		$	10.98
Weighted average months remaining					27.9					24.3

Summary of Stock Option Activity Under Stock Option and Incentive Plans

The following is a summary with respect to options outstanding at December 31, 2018 and 2017 and activity during the years then ended:

	2018							2017
	Number of Options			Weighted Average Exercise Price		Weighted Average Life Remaining			Number of Options			Weighted Average Exercise Price		Weighted Average Life Remaining
						(in years)								(in years)
Outstanding at January 1:		482,667			10.72					635,597			9.33
Granted		405,000			1.38					-			-
Lapsed/terminated		(105,012	)		4.96					(152,930	)		9.67
Outstanding at December 31:		782,655			6.66		3.2			482,667			10.72		3.3
Exercisable at December 31:		490,988			8.30		2.8			478,500			9.29		3.3
Expected to vest at December 31:		291,667			1.41		4.5			4,167			1.00		3.3
Aggregate intrinsic value of outstanding options at December 31:	$	-							$	10,000
Aggregate intrinsic value of exercisable options at December 31:	$	-							$	6,667
Aggregate intrinsic value of options expected to vest at December 31:	$	-							$	3,333

Schedule of Assumptions Used to Compute the Share-based Compensation Expense for Stock Options and Warrants

Volatility	98.20	%
Expected option term	3.6 years
Risk-free interest rate	2.7	%
Expected forfeiture rate	0.0	%
Expected dividend yield	0.0	%

Summary of Restricted Stock

The following is a summary of activity of restricted stock during the years ended at December 31, 2018 and 2017:

	Shares			Weighted - average Grant Date Fair Value
Restricted shares outstanding, December 31, 2016		231,000		$	0.56
Restricted shares granted		150,000			0.84
Restricted shares vested		(331,000	)		0.84
Restricted shares outstanding, December 31, 2017		50,000		$	0.64
Restricted shares granted		-
Restricted shares vested		(50,000	)		0.64
Restriced shares outstanding, December 31, 2018		-		$	-