Consolidated Statement of Changes in Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2019	33,480,365
Balance at Dec. 31, 2019	$ 33,481	$ 111,824,859	$ (91,724,078)	$ 20,134,262
Issuance of common stock upon exercise of warrants (in shares)	19,106,504
Issuance of common stock upon exercise of warrants	$ 19,106	7,768,370	0	7,787,476
Stock-based compensation expense	0	584,297	0	584,297
Net loss	$ 0	0	(10,123,249)	(10,123,249)
Sale of common stock and warrants, net of issuance costs (in shares)	11,428,572
Sale of common stock and warrants, net of issuance costs	$ 11,429	10,330,202	0	10,341,631
Balance (in shares) at Sep. 30, 2020	64,015,441
Balance at Sep. 30, 2020	$ 64,016	130,507,728	(101,847,327)	28,724,417
Balance (in shares) at Jun. 30, 2020	63,998,298
Balance at Jun. 30, 2020	$ 63,999	130,220,772	(97,408,116)	32,876,655
Issuance of common stock upon exercise of warrants (in shares)	17,143
Issuance of common stock upon exercise of warrants	$ 17	7,483	0	7,500
Stock-based compensation expense	0	279,473	0	279,473
Net loss	$ 0	0	(4,439,211)	(4,439,211)
Balance (in shares) at Sep. 30, 2020	64,015,441
Balance at Sep. 30, 2020	$ 64,016	130,507,728	(101,847,327)	28,724,417
Balance (in shares) at Dec. 31, 2020	64,015,441
Balance at Dec. 31, 2020	$ 64,016	130,659,550	(105,909,384)	24,814,182
Issuance of common stock upon exercise of warrants (in shares)	4,230,000
Issuance of common stock upon exercise of warrants	$ 4,230	2,197,220	0	2,201,450
Stock-based compensation expense	0	642,952	0	642,952
Net loss	$ 0	0	(20,621,286)	(20,621,286)
Sale of common stock and warrants, net of issuance costs (in shares)	33,658,538
Sale of common stock and warrants, net of issuance costs	$ 33,658	31,060,644	0	31,094,302
Balance (in shares) at Sep. 30, 2021	101,903,979
Balance at Sep. 30, 2021	$ 101,904	164,560,366	(126,530,670)	38,131,600
Balance (in shares) at Jun. 30, 2021	101,903,979
Balance at Jun. 30, 2021	$ 101,904	164,395,974	(114,331,276)	50,166,602
Stock-based compensation expense	0	164,392	0	164,392
Net loss	$ 0	0	(12,199,394)	(12,199,394)
Balance (in shares) at Sep. 30, 2021	101,903,979
Balance at Sep. 30, 2021	$ 101,904	$ 164,560,366	$ (126,530,670)	$ 38,131,600