Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 127,797	$ 155,349
Restricted cash	0	10,002
Trade accounts receivable, net	2,112	1,396
Inventory	11,860	12,030
Prepaid expenses and other current assets	7,750	5,518
Current assets of discontinued operations	0	208
Total current assets	149,519	184,503
Property and equipment, net	8,659	9,254
Intangible assets	102,500	102,500
Goodwill	6,234	6,234
Other assets	4,502	3,331
Total assets	271,414	305,822
Current liabilities:
Accounts payable	4,139	5,290
Accrued expenses	4,723	4,617
Accrued compensation	2,029	3,711
Common stock warrant liabilities	692	6,196
Long-term debt, current portion	0	6,321
Deferred revenue	1,014	945
Current liabilities of discontinued operations	1,537	2,906
Total current liabilities	14,134	29,986
Long term debt	21,602	15,899
Deferred revenue, less current portion	4,987	6,139
Contingent purchase consideration	53,600	51,000
Deferred income taxes	18,450	18,450
Other long-term liabilities	1,696	1,588
Stockholders’ equity:
Common stock, $0.001 par value; 50,000 shares authorized at June 30, 2016 and December 31, 2015; 24,791 and 24,772 shares issued and outstanding at June 30, 2016 and December 31, 2015, respectively	25	25
Additional paid-in capital	561,654	558,251
Accumulated deficit	(404,734)	(375,516)
Total stockholders’ equity	156,945	182,760
Total liabilities and stockholders’ equity	$ 271,414	$ 305,822