Consolidated Statements of Stockholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income [Member]	Class A Preferred Stock	Class B Preferred Stock	Total
Balance at Dec. 31, 2017	$ 25,702	$ 149,293,947	$ (131,432,883)	$ 0	$ 0	$ 0	$ 17,886,766
Balance (in shares) at Dec. 31, 2017	25,701,924				0	0
Net loss	$ 0	0	(9,555,601)	0	$ 0	$ 0	(9,555,601)
Other comprehensive income, net of taxes	0	0	0	3,153	0	0	3,153
Stock-based compensation expense	0	5,408,625	0	0	0	0	5,408,625
Warrant repricing expense	0	899,410	0	0	0	0	899,410
Proceeds from tender offer, net of costs of $99,357	$ 1,580	4,640,227	0	0	$ 0	0	4,641,807
Proceeds from tender offer, net of costs of $99,357 (in shares)	1,580,388				0
Proceeds from ATM, net of costs of $44,202	$ 248	3,362,908	0	0	$ 0	0	3,363,156
Proceeds from ATM, net of costs of $44,202(in Shares)	248,839				0
Issuance of common stock, net of costs of $191,670	$ 1,000	9,807,330	0	0	$ 0	0	9,808,330
Issuance of common stock, net of costs of $191,670(in Shares)	1,000,000				0
Issuance of common stock for board of director compensation	$ 6	69,994	0	0	$ 0	$ 0	70,000
Issuance of common stock for board of director compensation (in shares)	6,228				0	0
Proceeds from exercise of stock options and warrants	$ 1,783	6,019,136	0	0	$ 0	$ 0	6,020,919
Proceeds from exercise of stock options and warrants (in shares)	1,781,659				0	0
Balance at Dec. 31, 2018	$ 30,319	179,501,577	(140,988,484)	3,153	$ 0	$ 0	38,546,565
Balance (in shares) at Dec. 31, 2018	30,319,038				0	0
Net loss	$ 0	0	(18,331,479)	0	$ 0	$ 0	(18,331,479)
Other comprehensive income, net of taxes	0	0	0	(48,204)	0	0	(48,204)
Stock-based compensation expense	0	6,870,622	0	0	0	$ 0	6,870,622
Proceeds from tender offer, net of costs of $99,357 (in shares)						0
Issuance of common stock, net of costs of $191,670	$ 4,313	68,806,405	0	0	$ 0	$ 0	$ 68,810,718
Issuance of common stock, net of costs of $191,670(in Shares)	4,312,500				0		248,839
Accelerated stock-based compensation expense	$ 0	9,561,884	0	0	$ 0	0	$ 9,561,884
Issuance of common stock for board of director compensation	$ 6	90,994	0	0	$ 0	$ 0	91,000
Issuance of common stock for board of director compensation (in shares)	5,753				0	0
Issuance of common stock for convertible debt and accrued interest	$ 1,172	15,416,328	0	0	$ 0	$ 0	15,417,500
Issuance of common stock for convertible debt and accrued interest (in shares)	1,172,305
Proceeds from exercise of stock options and warrants	$ 1,530	5,361,212	0	0	$ 0	$ 0	5,362,742
Proceeds from exercise of stock options and warrants (in shares)	1,530,191				0	0
Balance at Dec. 31, 2019	$ 37,340	$ 285,609,022	$ (159,319,963)	$ (45,051)	$ 0	$ 0	$ 126,281,348
Balance (in shares) at Dec. 31, 2019	37,339,787				0	0