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Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2015

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

A summary of the status of the Company’s non-vested stock options at December 31 and changes during the year is as follows:

		2015						2014
					Weighted						Weighted
		Number of Options			Average Grant Date Fair Value			Number of Options			Average Grant Date Fair Value
Non-vested stock options at January 1			201,859		$	6.57			248,411		$	4.15
Granted			409,200		$	5.39			141,880		$	9.68
Vested			(97,367)		$	5.16			(156,240)		$	5.50
Exercised			-			-			(7,504)		$	4.88
Forfeited/Expired/Exchanged			(47,683)		$	6.88			(24,688)		$	7.36
Non-vested stock options at December 31			466,009		$	5.79			201,859		$	6.57

Schedule Of Recognized Compensation Cost [Table Text Block]

The recognized compensation cost associated with the Plan is as follows:

		2015			2014
Research and development		$	108,000		$	99,000
General and administrative			663,000			240,000
Effect on net loss		$	771,000		$	339,000
Effect on net loss per share		$	0.06		$	0.04

Schedule Of Share Based Payment Award Warrants Valuation Assumptions [Table Text Block]

The following weighted-average assumptions were utilized for the calculations:

Expected life (in years)		5
Weighted average volatility		74	%
Weighted average risk-free interest rate		1.49	%
Expected dividend rate		-

Schedule Of Share Based Compensation Warrants Activity [Table Text Block]

The following table summarizes the number of warrants, the weighted average exercise price, and weighted average life (in years) by price for both total outstanding warrants and total exercisable warrants at December 31, 2015:

				Total Outstanding Warrants
Exercise Price				Warrants		Weighted Average Exercise Price				Life (in years)
$	1.80			80,000		$	1.80			5.13
$	2.20			118,959		$	2.20			0.36
$	5.00			345,000		$	5.00			1.32
$	10.00			20,313		$	10.00			3.18
				564,272		$	4.14

Equity Incentive Plan [Member]

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

Activity under the Plan is as follows:

			2015			2014
Reserved but unissued shares under the Plan at January 1			242,764			249,736
Increases in the number of authorized shares under the Plan			315,225			85,705
Grants of stock options			(409,200)			(141,880)
Stock option forfeitures			116,780			24,688
Exercise of stock options			212,837			39,140
Stock grants			(23,034)			(14,625)
Stock grant forfeitures			-			-
Reserved but unissued shares under the Plan at December 31			455,372			242,764

Consultant Plan [Member]

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

Activity under the Consultant Plan is as follows:

		2015			2014
Reserved but unissued shares under the Consultant Plan at January 1			65,608			64,037
Increases in the number of authorized shares under the Consultant Plan			31,522			8,571
Stock grants			(5,000)			(7,000)
Stock grant forfeitures			-			-
Reserved but unissued shares under the Consultant Plan at December 31			92,130			65,608

Warrant [Member]

Schedule Of Share Based Compensation Warrants Activity [Table Text Block]

A summary of the Company’s warrant activity and related information is as follows:

		2015						2014
		Warrants			Weighted Average Exercise Price			Warrants			Weighted Average Exercise Price
Outstanding at January 1			564,272		$	4.14			543,959		$	3.92
Granted			-			-			20,313		$	10.00
Exercised			-			-			-			-
Forfeited/Expired			-			-			-			-
Outstanding at December 31			564,272		$	4.14			564,272		$	4.14

Employee Stock Option [Member]

Schedule Of Share Based Payment Award Warrants Valuation Assumptions [Table Text Block]

The following weighted-average assumptions were utilized in the calculation of the fair value of the stock options:

Expected life		5.81 years
Weighted average volatility		72	%
Forfeiture rate		11	%
Weighted average risk-free interest rate		1.45	%
Expected dividend rate		-

The following weighted-average assumptions were utilized in the calculation of the fair value of the stock options:

Expected life		6.25 years
Weighted average volatility		74	%
Forfeiture rate		13	%
Weighted average risk-free interest rate		1.93	%
Expected dividend rate		-

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

A summary of the Company’s stock option activity and related information is as follows:

		2015									2014
		Options to Purchase Common Stock			Weighted Average Exercise Price			Weighted Average Remaining Contractual Life (in years)			Options to Purchase Common Stock			Weighted Average Exercise Price			Weighted Average Remaining Contractual Life (in years)
Outstanding at January 1			643,817		$	4.46			5.67			565,765		$	3.19			8.21
Granted			409,200		$	5.39			9.22			141,880		$	9.68			7.70
Exercised			(212,837)		$	2.51			-			(39,140)		$	3.11			-
Forfeited/Expired/Exchanged			(116,780)		$	6.86			-			(24,688)		$	7.36			-
Outstanding at December 31			723,400		$	5.18			8.10			643,817		$	4.46			5.67
Exercisable at December 31			257,391		$	4.05			6.12			441,958		$	3.50			4.47

Schedule Of Employee Service Share Based Compensation Unrecognized Period Costs [Table Text Block]

At December 31, 2015, there was $910,000 of total unrecognized compensation cost related to non-vested stock option-based compensation arrangements granted under the Plan. That cost is expected to be recognized in future years as follows:

2016		$	553,000
2017			260,000
2018			79,000
2019			18,000
		$	910,000

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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