CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current Assets:
Cash and cash equivalents	$ 139,262	$ 82,387
Accounts receivable	6,319	0
Inventories	9,647	5,640
Prepaid expenses and other current assets	8,038	889
Total Current Assets	163,266	88,916
Property and equipment, net	568	593
Security deposits	408	343
Total Assets	164,242	89,852
Current Liabilities:
Accounts payable	28,445	15,584
Accrued expenses	10,203	13,552
Interest payable on senior convertible notes	581	294
Deferred revenues, net	4,260	0
Total Current Liabilities	43,489	29,430
Senior convertible notes, net	16,771	22,665
Derivative financial instruments, at estimated fair value-warrants	94	216
Total Liabilities	60,354	52,311
Commitments and contingencies
Stockholders’ Equity
Preferred stock, Authorized 20,000,000 shares and none outstanding, at March 31, 2017 and December 31, 2016	0	0
Common stock, par value of $.0001, 350,000,000 shares authorized at March 31, 2017 and December 31, 2016. Issued and outstanding 224,944,941 shares and 202,737,860 shares at March 31, 2017 and December 31, 2016, respectively.	23	20
Additional paid-in capital	751,461	620,513
Accumulated deficit	(647,596)	(582,992)
Total Stockholders’ Equity	103,888	37,541
Total Liabilities and Stockholders’ Equity	$ 164,242	$ 89,852