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Share Based Compensation (Tables)

6 Months Ended

Jun. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation

All stock-based compensation is included in operating expenses for the periods as follows:

		Three Months Ended								Six Months Ended
		June 30,								June 30,
		2018				2017				2018				2017
Compensation cost recognized:
Selling, general & administrative		$	57,719			$	88,040			$	112,153			$	177,158
Research & development			6,274				6,678				12,548				14,360
		$	63,993			$	94,718			$	124,701			$	191,518

Schedule of Stock Option Activity

Stock option activity under the 1998, 1999, 2001, 2003, 2006 and 2015 Stock Option Plans (collectively, the “Plans”) during the periods indicated below were as follows:

		Number of Shares Subject to Issuance				Weighted-average Exercise Price				Weighted-average Remaining Contractual Term				Aggregate Intrinsic Value
Outstanding at December 31, 2017			1,631,358			$	1.36				1.70 years			$	2,106,669
Granted			102,500				2.86
Forfeited or expired			(65,688	)			(4.22	)
Exercised			(593,838	)			1.16
Outstanding at June 30, 2018			1,074,332			$	1.44				2.42 years			$	1,031,006
Exercisable at June 30, 2018			811,988			$	1.30				2.16 years			$	862,310

Schedule of Restricted Stock Units Outstanding

		Number of Shares				Weighted Average Grant Date Fair Value				Aggregate Intrinsic Value
Outstanding at December 31, 2017			5,859			$	2.56			$	-
Granted			23,253				1.95
Vested and settled in shares			(22,155	)			2.00
Outstanding at June 30, 2018			6,957			$	2.30			$	-

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- Definition

Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

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