Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 100,847	$ 26,755
Short-term investments	1,494	59,447
Accounts receivable, net	15	60
Inventories	5,575	1,306
Prepaid expenses and other current assets	3,014	1,451
Total current assets	110,945	89,019
Property and equipment, net	2,122	2,555
Goodwill	40,275	39,781
Intangible assets, net	13,333	15,067
Restricted cash	350	350
Other long-term assets	289	294
Total assets	167,314	147,066
Current liabilities:
Accounts payable	5,113	1,400
Accrued expenses	3,454	4,247
Licensing and collaboration commitment	7,000
Current portion-loans payable	5,833
Other current liabilities	8	37
Total current liabilities	21,408	5,684
Loan payable, net	34,235	39,710
Other long-term liabilities	440	122
Total liabilities	56,083	45,516
Commitments and contingencies (Notes 5, 8 and 10)
Stockholders' equity:
Common stock, $0.001 par value; 100,000,000 shares authorized at September 30, 2016 and December 31, 2015, 36,318,541 and 34,563,816 issued and outstanding at September 30, 2016 and December 31, 2015, respectively	36	35
Treasury stock	(1,088)	(1,088)
Additional paid-in capital	282,972	263,941
Accumulated deficit	(162,260)	(152,018)
Accumulated other comprehensive loss	(8,429)	(9,320)
Total stockholders' equity	111,231	101,550
Total liabilities and stockholders' equity	$ 167,314	$ 147,066