Condensed Consolidated Balance Sheet - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 36,190	$ 3,939
Prepaid expenses and other current assets	911	1,025
Inventory	324
Total current assets	37,425	4,964
Deposits and other assets	648	217
Property and equipment, net	611	311
Total assets	38,684	5,492
Current liabilities:
Accounts payable	5,092	1,252
Accrued expenses and other current liabilities	4,475	3,694
Note payable, current portion		2,389
Total current liabilities	9,567	7,335
Notes payable, net of discount	14,619	7,499
Accrued interest		327
Deferred rent	40	28
Total liabilities	24,226	15,189
Commitments and contingencies (Note 5)
Stockholders' equity (deficit):
Preferred stock, $0.001 par value per share; 5,000,000 and 0 shares authorized, no shares issued and outstanding as of June 30, 2016 and December 31, 2015	0	0
Common stock, $0.001 par value per share; 250,000,000 shares authorized, 93,368,011 and 75,760,061 shares issued and outstanding as of June 30, 2016 and December 31, 2015	93	76
Additional paid-in capital	198,235	151,019
Accumulated deficit	(183,870)	(160,792)
Total stockholders' equity (deficit)	14,458	(9,697)
Total liabilities and stockholders' equity (deficit)	$ 38,684	$ 5,492