Consolidated Statements 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
Stock-based compensation expense		91,204		91,204
Net loss			(2,747,809)	(2,747,809)
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
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
Stock-based compensation expense		191,380		191,380
Net loss			(2,558,815)	(2,558,815)
Issuance of common stock upon exercise of warrants, net (in shares)	1,124,071
Issuance of common stock upon exercise of warrants, net	$ 1,124	133,674		134,798
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