Stock Purchase Warrants (Tables)

6 Months Ended

Jun. 30, 2016

Stock Purchase Warrants [Abstract]

Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block]

The assumptions used by the Company are summarized in the following table:

	June 30, 2016		December 31, 2015		Issuance Date
Closing stock price		$1.80		$2.29		$1.75
Expected dividends		0%		0%		0%
Expected volatility		90%		85%		95%
Risk free interest rate		0.75%		1.49%		1.39%
Expected life of warrant		3.29 years		3.79 years		5 years

Schedule Of Estimated Fair Value Of The Warrant Liability [Table Text Block]

The following table summarizes the estimated fair value of the warrant liability (in thousands) :

Balance at December 31, 2015	$	10,567
Change in fair value of warrant liability		(3,015	)
Balance at June 30, 2016	$	7,552

Schedule Of Warrant Activity [Table Text Block]

A summary of warrant activity for the Company for the six months ended June 30, 2016 and for the year ended December 31, 2015 is as follows:

	Number of			Weighted Average
	Warrants			Exercise Price
Balance at December 31, 2014		7,974,794		$	1.80
Granted		-		$	-
Exercised		(2,448	)	$	1.60
Forfeited		(63,447	)	$	1.79
Balance at December 31, 2015		7,908,899		$	1.79
Granted		-		$	-
Exercised		-		$	-
Forfeited		(50,000	)	$	3.75
Balance at June 30, 2016		7,858,899		$	1.77

Schedule Of Warrant Outstanding and Exercisable [Table Text Block]

A summary of all outstanding and exercisable warrants as of June 30, 2016 is as follows:

						Weighted Average
Exercise Price		Warrants Outstanding		Warrants Exercisable		Remaining Contractual Life
$	1.60		311,834		311,834	1.32 years
$	1.75		7,029,808		7,029,808	3.28 years
$	2.22		517,257		517,257	0.41 years
$	1.77		7,858,899		7,858,899	3.01 years