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Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Estimated Values of Stock Option Grants Valuation Assumptions

The weighted average estimated values of director and employee stock option grants, as well as the weighted average assumptions that were used in calculating such values during the nine months ended September 30, 2020 and 2019, were based on estimates at the date of grant as follows:

		April 30,				January 1,				February 10,
		2015 Grant				2016 Grant				2016 Grant
Risk-free interest rate			1.43	%			1.76	%			1.15	%
Weighted average expected term			5 years				5 years				5 years
Expected volatility			143.10	%			134.18	%			132.97	%
Expected dividend yield			0.00	%			0.00	%			0.00	%

		December 6,				September 25,				January 30,
		2016 Grant				2017 Grant				2019 Grant
Risk-free interest rate			1.84	%			1.85	%			2.54	%
Weighted average expected term			5 years				5 years				5 years
Expected volatility			123.82	%			130.79	%			115.80	%
Expected dividend yield			0.00	%			0.00	%			0.00	%

		March 11,				September 2,
		2019 Grant				2020 Grant
Risk-free interest rate			2.44	%			0.26	%
Weighted average expected term			5 years				5 years
Expected volatility			116.46	%			121.33	%
Expected dividend yield			0.00	%			0.00	%

Schedule of Stock Option Activity

A summary of stock option activity during the nine months ended September 30, 2020 and 2019 is as follows:

										Weighted-
						Weighted-				Average
		Shares				Average				Remaining		Aggregate
		Under				Exercise				Contractual		Intrinsic
		Option				Price				Life		Value
Outstanding at January 1, 2020			46,860			$	9.02			9 years			19,200
Granted			99,000				4.00
Outstanding at September 30, 2020			145,860			$	5.61			9 years		$	19,200
Exercisable at September 30, 2020			38,785			$	9.54			8 years		$	19,200

										Weighted-
						Weighted-				Average
		Shares				Average				Remaining		Aggregate
		Under				Exercise				Contractual		Intrinsic
		Option				Price				Life		Value
Outstanding at January 1, 2019			36,760			$	25.04			8 years			79,200
Granted			43,550				6.72
Forfeited and expired			(33,450	)			43.00
Outstanding at September 30, 2019			46,860			$	9.02			9 years		$	19,200
Exercisable at September 30, 2019			34,960			$	9.87			9 years		$	19,200

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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=120381028&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=120381028&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=120381028&loc=d3e5070-113901

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- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ 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 (f)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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