CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - 9 months ended Sep. 30, 2018 - USD ($)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
Beginning Balance at Dec. 31, 2017	$ 62,147,730	$ 15,302	$ 158,867,600	$ (96,735,172)
Beginning Balance, Shares at Dec. 31, 2017		15,302,455
Stock-based compensation	593,521		593,521
Shares issued for Employee Stock Purchase Plan options, Value	18,396	$ 11	18,385
Shares issued for Employee Stock Purchase Plan options, Shares		10,928
Net loss	(2,531,955)			(2,531,955)
Ending Balance at Sep. 30, 2018	$ 60,227,692	$ 15,313	$ 159,479,506	$ (99,267,127)
Ending Balance, Shares at Sep. 30, 2018		15,313,383