CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 54,781	$ 12,316
Accounts receivable, net	2,161	2,068
Inventories	3,205	3,991
Prepaid expenses and other current assets	680	425
Total current assets	60,827	18,800
Property and equipment, net	2,451	2,608
Other assets	196	3,029
Total assets	63,474	24,437
Current liabilities:
Accounts payable	464	1,013
Accrued compensation	2,333	1,147
Accrued expenses and other current liabilities	3,103	4,850
Borrowings, current portion		1,873
Total current liabilities	5,900	8,883
Borrowings, net of current portion	29,154	18,228
Convertible notes and accrued interest		8,609
Other long-term liabilities	1,677	325
Total liabilities	$ 36,731	36,045
Convertible preferred stock issuable in series, par value of $0.001 Shares authorized: none at September 30, 2015 and 6,819,197 at December 31, 2014 Shares issued and outstanding: none at September 30, 2015 and 5,262,728 at December 31, 2014 Liquidation preference: none at September 30, 2015		$ 132,260
Stockholders' equity (deficit):
Preferred stock issuable in series, par value of $0.001 Shares authorized: 5,000,000 at September 30, 2015 and none at December 31, Shares issued and outstanding: none at September 30, 2015 and December 31, 2014
Common stock, par value of $0.001 Shares authorized: 100,000,000 at September 30, 2015 and 15,555,555 at December 31, 2014 Shares issued and outstanding: 12,620,682 at September 30, 2015 and 243,260 at December 31, 2014	$ 13
Additional paid-in capital	209,535	$ 2,665
Accumulated deficit	(182,805)	(146,533)
Total stockholders' equity (deficit)	26,743	(143,868)
Total liabilities, convertible preferred stock, and stockholders' equity (deficit)	$ 63,474	$ 24,437