Balance Sheets (Unaudited) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 95,590,661	$ 106,398,919
Prepaid expenses and other current assets	699,525	954,581
Total current assets	96,290,186	107,353,500
Property and equipment, net	3,465,055	3,418,077
Other assets	142,870	142,870
Total assets	99,898,111	110,914,447
Current liabilities:
Accounts payable	2,527,616	3,471,032
Accrued expenses	3,638,589	3,213,715
Short term debt	579,554	0
Total current liabilities	6,745,759	6,684,747
Noncurrent liability:
Long term debt	14,505,605	14,953,143
STOCKHOLDERS' EQUITY
Preferred stock, 5,000,000 shares authorized at March 31, 2017 and December 31, 2016, 0 outstanding	0	0
Common stock, $0.00033 par value, 75,000,000 shares authorized at March 31, 2017 and December 31, 2016, 29,011,436 shares and 28,918,516 shares issued and outstanding at March 31, 2017 and December 31, 2016, respectively	9,786	9,756
Additional paid-in capital	191,895,736	190,341,769
Accumulated deficit	(113,258,775)	(101,074,968)
Total stockholders' equity	78,646,747	89,276,557
Total liabilities and stockholders' equity	$ 99,898,111	$ 110,914,447