Statements of Stockholders' (Deficit) Equity - USD ($)	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]
Beginning Balance at Dec. 31, 2018	$ 4,025,320	$ 1,743	$ 82,628,312	$ (78,604,735)
Beginning Balance, Shares at Dec. 31, 2018		17,427,533
Stock-based compensation expense	$ 1,373,958		1,373,958
Issuance of common stock from employee stock purchase plan, shares	0
Issuance of common stock from ATM, net of costs	$ 6,106,922	$ 700	6,106,222
Issuance of common stock from ATM, net of costs ,Shares		7,004,381
Net loss	(7,125,655)			(7,125,655)
Ending Balance at Dec. 31, 2019	$ 4,380,545	$ 2,443	90,108,492	(85,730,390)
Ending Balance, Shares at Dec. 31, 2019	24,431,914	24,431,914
Stock-based compensation expense	$ 1,628,558		1,628,558
Issuance of common stock from employee stock purchase plan	$ 119,416	$ 12	119,404
Issuance of common stock from employee stock purchase plan, shares	118,491	118,491
Issuance of common stock from warrant exercise		$ 38	(38)
Issuance of common stock from warrant exercise, shares	381,625	381,625
Issuance of common stock from stock option exercises	$ 215,816	$ 20	215,796
Issuance of common stock from stock option exercise, shares		199,111
Issuance of common stock from ATM, net of costs	3,595,713	$ 149	3,595,564
Issuance of common stock from ATM, net of costs ,Shares		1,490,813
Net loss	(13,154,671)			(13,154,671)
Ending Balance at Dec. 31, 2020	$ (3,214,623)	$ 2,662	$ 95,667,776	$ (98,885,061)
Ending Balance, Shares at Dec. 31, 2020	26,621,954	26,621,954