Stock-Based Compensation, Stock Option Activity (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2020 USD ($) $ / shares shares	Sep. 30, 2020 USD ($) $ / shares shares
Unamortized Stock Compensation Expense [Abstract]
Unamortized stock compensation expense | $	$ 1,424,897	$ 1,424,897
Stock Options [Member]
Number of Shares [Roll Forward]
Options outstanding, beginning balance (in shares) | shares		1,421,797
Granted (in shares) | shares	0	319,907
Exercised (in shares) | shares		0
Forfeited (in shares) | shares		(84,227)
Expired (in shares) | shares		(17,724)
Options outstanding, ending balance (in shares) | shares	1,639,753	1,639,753
Vested and expected to vest (in shares) | shares	1,639,753	1,639,753
Exercisable (in shares) | shares	1,066,601	1,066,601
Weighted Average Exercise Price [Roll Forward]
Options outstanding, beginning balance (in dollars per share) | $ / shares		$ 15.95
Granted (in dollars per share) | $ / shares		1.43
Exercised (in dollars per share) | $ / shares		0
Forfeited (in dollars per share) | $ / shares		41.34
Expired (in dollars per share) | $ / shares		4.69
Options outstanding, ending balance (in dollars per share) | $ / shares	$ 11.94	11.94
Vested and expected to vest (in dollars per share) | $ / shares	11.94	11.94
Exercisable (in dollars per share) | $ / shares	$ 16.54	$ 16.54
Weighted Average Remaining Contractual Life and Aggregate Intrinsic Value [Abstract]
Options outstanding, weighted average remaining contractual life		6 years 11 months 1 day
Vested and expected to vest, weighted average remaining contractual life		6 years 11 months 1 day
Exercisable, weighted average remaining contractual life		5 years 7 months 24 days
Options outstanding, aggregate intrinsic value | $	$ 287,063	$ 287,063
Vested and expected to vest, aggregate intrinsic value | $	287,063	287,063
Exercisable, aggregate intrinsic value | $	$ 0	$ 0
Unamortized Stock Compensation Expense [Abstract]
Period for recognition		3 years 1 month 24 days