CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - 6 months ended Jun. 30, 2017 - USD ($)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
Beginning Balance at Dec. 31, 2016	$ 67,272,208	$ 15,273	$ 158,171,831	$ (90,914,896)
Beginning Balance, Shares at Dec. 31, 2016		15,272,575
Stock-based compensation	346,220		346,220
Shares issued for Employee Stock Purchase Plan options, Value	11,972	$ 8	11,964
Shares issued for Employee Stock Purchase Plan options, Shares		8,749
Net loss	(3,160,005)			(3,160,005)
Ending Balance at Jun. 30, 2017	$ 64,470,395	$ 15,281	$ 158,530,015	$ (94,074,901)
Ending Balance, Shares at Jun. 30, 2017		15,281,324