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, 2018	3,376,230
Balance at Dec. 31, 2018	$ 3,377	$ 95,532,881	$ (79,924,699)	$ 15,611,559
Issuance of common stock and warrants, net of issuance costs (in shares)	1,317,060
Issuance of common stock and warrants, net of issuance costs	$ 1,317	5,567,633		5,568,950
Stock-based compensation expense		240,284		240,284
Net loss			(5,243,207)	(5,243,207)
Balance (in shares) at Jun. 30, 2019	4,693,290
Balance at Jun. 30, 2019	$ 4,694	101,340,798	(85,167,906)	16,177,586
Balance (in shares) at Mar. 31, 2019	3,376,230
Balance at Mar. 31, 2019	$ 3,377	95,624,085	(82,672,508)	12,954,954
Issuance of common stock and warrants, net of issuance costs (in shares)	1,317,060
Issuance of common stock and warrants, net of issuance costs	$ 1,317	5,567,633		5,568,950
Stock-based compensation expense		149,080		149,080
Net loss			(2,495,398)	(2,495,398)
Balance (in shares) at Jun. 30, 2019	4,693,290
Balance at Jun. 30, 2019	$ 4,694	101,340,798	(85,167,906)	16,177,586
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 and warrants, net of issuance costs (in shares)	11,428,572
Issuance of common stock and warrants, net of issuance costs	$ 11,429	10,330,202		10,341,631
Stock-based compensation expense		304,824		304,824
Net loss			(5,684,038)	(5,684,038)
Issuance of common stock upon exercise of warrants (in shares)	19,089,361
Issuance of common stock upon exercise of warrants	$ 19,089	7,760,887		7,779,976
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
Balance (in shares) at Mar. 31, 2020	34,604,436
Balance at Mar. 31, 2020	$ 34,605	112,149,913	(94,282,893)	17,901,625
Issuance of common stock and warrants, net of issuance costs (in shares)	11,428,572
Issuance of common stock and warrants, net of issuance costs	$ 11,429	10,330,202		10,341,631
Stock-based compensation expense		113,444		113,444
Net loss			(3,125,223)	(3,125,223)
Issuance of common stock upon exercise of warrants (in shares)	17,965,290
Issuance of common stock upon exercise of warrants	$ 17,965	7,627,213		7,645,178
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