Stock Options / Warrant Grants (Tables)

9 Months Ended

Sep. 30, 2015

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The following table summarizes weighted-average assumptions using the Black-Scholes option-pricing model used on the date of the grants issued during the nine months ended September 30, 2014 and 2013:

	Nine months ended September 30,
	2015	2014
Volatility	63% - 64%	197%
Expected term (years)	10	7.5 yrs
Risk-free interest rate	1.92% - 2.33%	0.87%
Dividend yield	0%	0%

Warrant [Member]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

Warrant activity for the nine months ended September 30, 2015 and the nine months ended September 30, 2014 is summarized as follows:

Nine months ended September 30, 2015							Nine months ended September 30, 2014
					Aggregate						Aggregate
			Weighted		Intrinsic				Weighted		Intrinsic
			Average		Value as of				Average		Value as of
			Exercise		September				Exercise		September
	Shares		Price		30, 2015		Shares		Price		30, 2014
Warrants outstanding at beginning of period		3,303,000	$	0.17				3,303,000	$	0.17
Granted		0		NA				0		NA
Exercised		0		NA				0		NA
Cancelled/expired		(918,000)	$	0.15				0	$	0.14
Warrants outstanding at end of period		2,385,000	$	0.17	$	0		3,303,000	$	0.17	$	0
Warrants exercisable at end of period		2,385,000	$	0.17				3,303,000	$	0.17

Employee Stock Option [Member]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

Stock option activity for the nine months ended September 30, 2015, and the nine months ended September 30, 2014 is summarized as follows:

Nine months ended September 30, 2015							Nine months ended September 30, 2014
											Aggregate
					Aggregate						Intrinsic
			Weighted		Intrinsic				Weighted		Value as of
			Average		Value as of				Average		September
			Exercise		September				Exercise		30,
	Shares		Price		30, 2015		Shares		Price		2014
Options outstanding at beginning of period		1,295,000	$	0.27				3,316,000	$	0.69
Granted		340,000	$	0.12				80,000	$	0.12
Exercised		0		NA				0		NA
Cancelled/expired		(200,000)	$	0.90				(838,000)	$	1.07
Options outstanding at end of period		1,435,000		0.14	$	16,300		2,558,000	$	0.22	$	6,150
Options exercisable at end of period		1,027,000	$	0.15				2,209,000	$	0.23