Stock-Based Compensation (Summary of Stock Options Activity) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Number of Options
Balance, beginning	1,081,667	566,667
Granted		640,000
Exercised
Cancelled		(125,000)
Balance, ending	1,081,667	1,081,667	566,667
Exercisable	688,332
Outstanding, intrinsic value
Exercisable, intrinsic value	$ 102,667
Weighted Average Exercise Price
Balance, beginning	$ 1.74	$ 2.33
Granted		1.54
Exercised
Cancelled		3.00
Balance, ending	1.74	$ 1.74	$ 2.33
Exercisable	$ 1.85
Outstanding, contractual term	6 years 8 months 2 days	7 years 8 months 2 days	5 years 11 months 12 days
Exercisable, contractual term	5 years 5 months 9 days
Granted, contractual term		9 years 9 months 29 days
Cancelled, contractual term		7 years