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Stock Options (Tables)

12 Months Ended

Dec. 31, 2019

Share-based Payment Arrangement [Abstract]

Schedule of information about stock options

		Number of options				Weighted average exercise price				Weighted average contractual term (years)				Aggregate intrinsic value
Outstanding at January 1, 2018			335,900			$	5.61
Granted			308,000				1.80
Forfeited			(23,000	)			4.99
Outstanding at December 31, 2018			620,900			$	3.75
Granted			1,694,851				1.00
Forfeited			(203,766	)			1.71								104,868
Expired			(25,000	)			6.20
Exercised			(82,667	)			0.84								67,911
Outstanding at December 31, 2019			2,004,318			$	1.72				8.79				2,542,361
Vested and exercisable at December 31, 2019			804,651			$	2.53				7.98			$	873,997

Schedule of option input into a Black Scholes option pricing model

		2019				2018
Exercise price			$0.83 to $1.80				$0.79 to $4.35
Expected life			6.8 years				6.0 years
Expected volatility			64	%			38	%
Dividend yield			0	%			0	%
Risk-free interest rate			1.43% to 2.55	%			2.27% to 2.99	%

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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.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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