CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 82,387	$ 61,653
Available-for-sale securities	0	50,097
Inventories	5,640	0
Prepaid expenses and other current assets	889	3,305
Total Current Assets	88,916	115,055
Property and equipment, net	593	531
Security deposits	343	343
Total Assets	89,852	115,929
Current Liabilities:
Accounts payable	15,584	13,263
Accrued expenses	13,552	4,328
Interest payable on senior convertible notes	294	1,988
Total Current Liabilities	29,430	19,579
Senior convertible notes, net	22,665	151,241
Derivative financial instruments, at estimated fair value-warrants	216	322
Total Liabilities	52,311	171,142
Commitments and contingencies (Note 8)
Stockholders’ Equity/(Deficit):
Preferred stock, Authorized 20,000,000 shares and none outstanding, at December 31, 2016 and December 31, 2015	0	0
Common stock, par value of $.0001, 350,000,000 shares authorized at December 31, 2016 and December 31, 2015. Issued and outstanding 202,737,860 shares and 113,694,606 shares at December 31, 2016 and December 31, 2015, respectively.	20	11
Additional paid-in capital	620,513	329,161
Accumulated deficit	(582,992)	(384,385)
Total Stockholders’ Equity/(Deficit)	37,541	(55,213)
Total Liabilities and Stockholders’ Equity/(Deficit)	$ 89,852	$ 115,929