CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)	Total	Common Stock	Additional Paid in Capital	Accumulated Deficit	Treasury Stock
Beginning Balance (in shares) at Dec. 31, 2017		28,618,454
Beginning Balance at Dec. 31, 2017	$ 14,087,342	$ 28,996	$ 136,033,967	$ (120,579,062)	$ (1,396,559)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,408,024)			(1,408,024)
Stock-based compensation	377,847		377,847
Stock issued for vested restricted stock awards (in shares)		178,618
Stock issued for vested restricted stock awards	0	$ 178	(178)
Ending Balance (in shares) at Mar. 31, 2018		28,797,072
Ending Balance at Mar. 31, 2018	13,057,165	$ 29,174	136,411,636	(121,987,086)	(1,396,559)
Beginning Balance (in shares) at Dec. 31, 2017		28,618,454
Beginning Balance at Dec. 31, 2017	14,087,342	$ 28,996	136,033,967	(120,579,062)	(1,396,559)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(2,240,721)
Ending Balance (in shares) at Jun. 30, 2018		32,126,478
Ending Balance at Jun. 30, 2018	14,576,049	$ 32,503	138,759,888	(122,819,783)	(1,396,559)
Beginning Balance (in shares) at Mar. 31, 2018		28,797,072
Beginning Balance at Mar. 31, 2018	13,057,165	$ 29,174	136,411,636	(121,987,086)	(1,396,559)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(832,697)			(832,697)
Stock-based compensation	289,950		289,950
Stock issued for vested restricted stock awards (in shares)		40,406
Stock issued for vested restricted stock awards	0	$ 40	(40)
Shares withheld for taxes on vest restricted stock	(1,702)		(1,702)
Capital raise, common stock issued (in shares)		3,289,000
Capital raise, common stock value issued	2,063,333	$ 3,289	2,060,044
Ending Balance (in shares) at Jun. 30, 2018		32,126,478
Ending Balance at Jun. 30, 2018	14,576,049	$ 32,503	138,759,888	(122,819,783)	(1,396,559)
Beginning Balance (in shares) at Dec. 31, 2018		32,381,290
Beginning Balance at Dec. 31, 2018	11,033,815	$ 32,759	138,867,509	(126,469,894)	(1,396,559)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(2,462,393)			(2,462,393)
Stock-based compensation	96,871		96,871
Stock issued for vested restricted stock awards (in shares)		186,031
Stock issued for vested restricted stock awards	0	$ 186	(186)
Ending Balance (in shares) at Mar. 31, 2019		32,567,321
Ending Balance at Mar. 31, 2019	8,668,293	$ 32,945	138,964,194	(128,932,287)	(1,396,559)
Beginning Balance (in shares) at Dec. 31, 2018		32,381,290
Beginning Balance at Dec. 31, 2018	11,033,815	$ 32,759	138,867,509	(126,469,894)	(1,396,559)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(4,417,386)
Ending Balance (in shares) at Jun. 30, 2019		32,614,534
Ending Balance at Jun. 30, 2019	6,754,077	$ 32,992	139,004,924	(130,887,280)	(1,396,559)
Beginning Balance (in shares) at Mar. 31, 2019		32,567,321
Beginning Balance at Mar. 31, 2019	8,668,293	$ 32,945	138,964,194	(128,932,287)	(1,396,559)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,954,993)			(1,954,993)
Stock-based compensation	49,822		49,822
Stock issued for vested restricted stock awards (in shares)		47,213
Stock issued for vested restricted stock awards	0	$ 47	(47)
Shares withheld for taxes on vest restricted stock	(9,045)		(9,045)
Ending Balance (in shares) at Jun. 30, 2019		32,614,534
Ending Balance at Jun. 30, 2019	$ 6,754,077	$ 32,992	$ 139,004,924	$ (130,887,280)	$ (1,396,559)