Stock Options and Warrants (Tables)

3 Months Ended

Mar. 31, 2017

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 First Quarter 2017 and the First Quarter 2016:

	First Quarter
	2017		2016
Volatility		NA		62	%
Expected term (years)		NA		10 yrs
Risk-free interest rate		NA		1.94	%
Dividend yield		NA		0	%

Warrant [Member]

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

Warrant activity for the First Quarter 2017 and the First Quarter 2016 is summarized as follows:

	First Quarter 2017						First Quarter 2016
					Aggregate						Aggregate
			Weighted		Intrinsic				Weighted		Intrinsic
			Average		Value as of				Average		Value as of
			Exercise		March 31,				Exercise		March 31,
	Shares		Price		2017		Shares		Price		2016
Warrants outstanding at beginning of period		2,060,000	$	0.18				2,385,000	$	0.17
Granted		0		NA				0		NA
Exercised		0		NA				0		NA
Cancelled/expired		0		NA				0		NA
Warrants outstanding at end of period		2,060,000	$	0.18		None		2,385,000	$	0.17		None
Warrants exercisable at end of period		2,060,000	$	0.18				2,385,000	$	0.17

Employee Stock Option [Member]

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

Stock option activity for the First Quarter 2017 and the First Quarter 2016 is summarized as follows (the figures contained within the tables below have been rounded to the nearest thousand):

	First Quarter 2017						First Quarter 2016
					Aggregate						Aggregate
			Weighted		Intrinsic				Weighted		Intrinsic
			Average		Value as of				Average		Value as of
			Exercise		March 31,				Exercise		March 31,
	Shares		Price		2017		Shares		Price		2016
Options outstanding at beginning of period		2,107,000	$	0.13				1,435,000	$	0.14
Granted		0		NA				750,000	$	0.11
Exercised		0		NA				0		NA
Cancelled/expired		0		NA				0		NA
Options outstanding at end of period		2,107,000	$	0.13	$	15,000		2,185,000	$	0.13	$	17,000
Options exercisable at end of period		1,485,000	$	0.13				1,037,000	$	0.15