Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 132,184	$ 155,349
Restricted cash	10,002	10,002
Trade accounts receivable, net	4,904	1,396
Inventory	9,459	12,030
Prepaid expenses and other current assets	6,463	5,518
Current assets of discontinued operations	41	208
Total current assets	163,053	184,503
Property and equipment, net	8,959	9,254
Intangible assets	102,500	102,500
Goodwill	6,234	6,234
Other assets	5,861	3,331
Total assets	286,607	305,822
Current liabilities:
Accounts payable	3,482	5,290
Accrued expenses	4,259	4,617
Accrued compensation	1,924	3,711
Common stock warrant liabilities	1,669	6,196
Long-term debt, current portion	6,357	6,321
Deferred revenue	661	945
Current liabilities of discontinued operations	2,370	2,906
Total current liabilities	20,722	29,986
Long term debt	14,400	15,899
Deferred revenue, less current portion	5,207	6,139
Contingent purchase consideration	52,300	51,000
Deferred income taxes	18,450	18,450
Other long-term liabilities	1,669	1,588
Stockholders’ equity:
Common stock, $0.001 par value; 50,000 shares authorized at March 31, 2016 and December 31, 2015; 24,772 shares issued and outstanding at March 31, 2016 and December 31, 2015	25	25
Additional paid-in capital	559,739	558,251
Accumulated deficit	(385,905)	(375,516)
Total stockholders’ equity	173,859	182,760
Total liabilities and stockholders’ equity	$ 286,607	$ 305,822