CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 10,930	$ 22,560
Short-term investments	39,117	45,116
Investment in marketable equity securities	3,710	3,952
Accounts receivable	5,583	6,868
Inventories	12,919	12,531
Other current assets	3,461	3,078
Total current assets	75,720	94,105
Non-current assets:
Property and equipment, net	2,842	2,985
Goodwill	1,316	1,316
Intangible assets, net	688	738
Restricted cash	262	184
Other assets	4,113	4,148
Total assets	84,941	103,476
Current liabilities:
Accounts payable	8,789	8,587
Accrued liabilities	9,492	11,218
Debt - current	7,693	6,934
Deferred product revenue - current	470	149
Total current liabilities	26,444	26,888
Non-current liabilities:
Debt - non-current	10,464	12,441
Manufacturing and development obligations - non-current	4,924	4,770
Other non-current liabilities	1,622	1,590
Total liabilities	43,454	45,689
Commitments and contingencies
Stockholders' equity:
Common stock	103	103
Additional paid-in capital	720,843	718,299
Accumulated other comprehensive (loss) income	(143)	103
Accumulated deficit	(679,316)	(660,718)
Total stockholders' equity	41,487	57,787
Total liabilities and stockholders' equity	$ 84,941	$ 103,476