7. Common Stock (Tables)

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Employee stock options outstanding

# Common Shares Issuable		Exercise Price
	46,500	$	0.58
	155,000		0.58
	1,400,000		0.58
	31,000		0.58
	123,667		0.58
	207,500		1.00
	232,500		1.00
	287,500		1.00
	280,000		0.53
	35,000		0.50
	372,500		0.51
	332,500		0.623
	474,500		0.60
	443,500		0.40

Assumptions for grants

Expected volatility	20%
Expected dividend yield	None
Expected term (in years)	3
Risk-free interest rate	1.68 to 2.82%

Options outstanding

Balance of employee stock options outstanding as of 12/31/17	3,334,167
Stock options granted during the year ended 12/31/18	415,000
Stock options exercised during the year ended 12/31/18	0
Stock options forfeited during the year ended 12/31/18	(105,500	)
Balance of employee stock options outstanding as of 12/31/18	3,643,667
Stock options granted during the year ended 12/31/19	529,500
Stock options exercised during the year ended 12/31/19	0
Stock options forfeited during the year ended 12/31/19	(195,000	)
Balance of employee stock options outstanding as of 12/31/19	3,978,167
Stock options granted during the year ended 12/31/20	443,500
Stock options exercised during the year ended 12/31/20	0
Stock options forfeited during the year ended 12/31/20	0
Balance of employee stock options outstanding as of 12/31/20	4,421,667

Number of non-vested options outstanding

Balance of employee non-vested stock options outstanding as of 12/31/17	749,835
Stock options granted during the year ended 12/31/18	415,000
Stock options vested during the year ended 12/31/18	(337,499	)
Stock options forfeited during the year ended 12/31/18	(105,500	)
Balance of employee non-vested stock options outstanding as of 12/31/18	721,836
Stock options granted during the year ended 12/31/19	529,500
Stock options vested during the year ended 12/31/19	(325,000	)
Stock options forfeited during the year ended 12/31/19	(195,000	)
Balance of employee non-vested stock options outstanding as of 12/31/19	731,336
Stock options granted during the year ended 12/31/20	443,500
Stock options vested during the year ended 12/31/20	(212,500	)
Stock options forfeited during the year ended 12/31/20	0
Balance of employee non-vested stock options outstanding as of 12/31/20	962,336