CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - 6 months ended Jun. 30, 2018 - USD ($)	Common Stock	Non-Voting Common Stock	Additional Paid-In Capital	Accumulated Deficit	Total
Beginning Balance, Amount at Dec. 31, 2017	$ 3,673	$ 859	$ 191,022,018	$ (150,693,793)	$ 40,332,757
Beginning Balance, Shares at Dec. 31, 2017	36,725,499	8,591,160
Stock-based compensation			1,050,175		1,050,175
Issuance of common stock, net of offering expenses, Amount	$ 962		42,945,149		42,946,111
Issuance of common stock, net of offering expenses, Shares	9,623,430
Retirement of Non-voting common stock, Amount		$ (859)	859
Retirement of Non-voting common stock, Shares		(8,591,160)
Stock options exercised, Shares	585
Net loss				(32,569,973)	(32,569,973)
Ending Balance, Amount at Jun. 30, 2018	$ 4,635	$ 0	$ 235,018,201	$ (183,263,766)	$ 51,759,070
Ending Balance, Shares at Jun. 30, 2018	46,349,514	0