Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 155,349	$ 42,205
Restricted cash	10,002	8,500
Trade accounts receivable	1,396	6,078
Inventory	12,030	11,444
Prepaid expenses	1,707	457
Other current assets	3,904	2,098
Current assets of discontinued operations	208	7,196
Total current assets	184,596	77,978
Property and equipment, net	9,254	10,618
Intangible assets	102,500	102,500
Goodwill	6,234	6,234
Other assets	3,403	2,832
Noncurrent assets of discontinued operations	0	2,673
Total assets	305,987	202,835
Current liabilities:
Accounts payable	5,290	4,742
Accrued expenses	4,617	6,016
Common stock warrant liabilities	6,196	5,093
Accrued compensation	3,711	3,157
Revolving credit facility	0	1,450
Long-term debt, current portion	6,414	0
Deferred revenue	945	1,472
Current liabilities of discontinued operations	2,906	22,307
Total current liabilities	30,079	44,237
Long-term debt	15,971	21,703
Deferred revenue, less current portion	6,139	7,063
Contingent purchase consideration	51,000	53,000
Deferred tax liability	18,450	20,500
Other long-term liabilities	$ 1,588	$ 1,053
Commitments and contingencies
Stockholders’ equity:
Common stock, $0.001 par value; 50,000 shares authorized at December 31, 2015 and 2014; 24,772 and 19,170 shares issued and outstanding at December 31, 2015 and 2014, respectively.	$ 25	$ 19
Additional paid-in capital	558,251	456,920
Accumulated deficit	(375,516)	(401,660)
Total stockholders’ equity	182,760	55,279
Total liabilities and stockholders’ equity	$ 305,987	$ 202,835