CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 147,515	$ 180,542
Accounts receivable, net	14,161	17,956
Prepaid royalties (including prepaid royalties to a related party of $0 and $7,949 as of September 30, 2016 and December 31, 2015, respectively)	10,464	23,715
Prepaid expenses and other assets	18,392	14,841
Total current assets	190,532	237,054
Property and equipment, net	5,539	5,447
Restricted cash	1,162	1,498
Long-term prepaid royalties (including long-term prepaid royalties to a related party of $0 and $2,051 as of September 30, 2016 and December 31, 2015, respectively)	31,877	46,944
Other long-term assets	3,866	1,386
Intangible assets, net (including intangible assets acquired from a related party of $0 and $5,000 as of September 30, 2016 and December 31, 2015, respectively)	10,891	22,767
Goodwill	88,108	87,890
Total assets	331,975	402,986
Current liabilities:
Accounts payable	10,647	9,386
Accrued liabilities	1,646	1,654
Accrued compensation	9,342	7,100
Accrued royalties (including accrued royalties to a related party of $0 and $10,449 as of September 30, 2016 and December 31, 2015, respectively)	7,769	21,032
Accrued restructuring	381	342
Deferred revenue	32,426	31,112
Total current liabilities	62,211	70,626
Long-term accrued royalties (including long-term accrued royalties to a related party of $0 and $2,051 as of September 30, 2016 and December 31, 2015, respectively)	21,384	24,347
Other long-term liabilities	1,331	1,585
Total liabilities	84,926	96,558
Commitments and contingencies (Note 7)
Stockholders' equity:
Preferred stock, $0.0001 par value; 5,000 shares authorized at September 30, 2016 and December 31, 2015; no shares issued and outstanding at September 30, 2016 and December 31, 2015
Common stock, $0.0001 par value; 250,000 shares authorized at September 30, 2016 and December 31, 2015; 133,464 and 131,580 shares issued and outstanding at September 30, 2016 and December 31, 2015	14	13
Additional paid-in capital	568,396	557,748
Accumulated other comprehensive income/(loss)	113	(85)
Accumulated deficit	(321,474)	(251,248)
Total stockholders' equity	247,049	306,428
Total liabilities and stockholders' equity	$ 331,975	$ 402,986