Stock Option Plans and Warrants to Purchase Common Stock - Schedule of remaining life, by grant date, for outstanding warrants (Details)	12 Months Ended
	Dec. 31, 2021 $ / shares shares
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Outstanding Warrants	3,328,072
Exercisable Warrants	3,328,072
11/1/2017 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share) | $ / shares	$ 2.50
Remaining Contractual Life in Years	9 months 29 days
Outstanding Warrants	49,872
Exercisable Warrants	49,872
3/29/2018 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share) | $ / shares	$ 1.95
Remaining Contractual Life in Years	1 year 2 months 26 days
Outstanding Warrants	10,000
Exercisable Warrants	10,000
7/2/2018 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share) | $ / shares	$ 2.25
Remaining Contractual Life in Years	3 days
Outstanding Warrants	3,268,200
Exercisable Warrants	3,268,200