CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 102,102	$ 180,542
Accounts receivable, net	21,477	17,956
Prepaid royalties (including prepaid royalties to a related party of $0 and $7,949 as of December 31, 2016 and December 31, 2015, respectively)	12,465	23,715
Prepaid expenses and other assets	18,986	14,841
Total current assets	155,030	237,054
Property and equipment, net	5,640	5,447
Restricted cash	1,312	1,498
Long-term prepaid royalties (including long-term prepaid royalties to a related party of $0 and $2,051 as of December 31, 2016 and December 31, 2015, respectively)	31,288	46,944
Other long-term assets	3,506	1,386
Intangible assets, net (including intangible assets acquired from a related party of $0 and $5,000 as of December 31, 2016 and December 31, 2015, respectively)	25,896	22,767
Goodwill	116,832	87,890
Total assets	339,504	402,986
Current liabilities:
Accounts payable	16,298	9,386
Accrued liabilities	1,788	1,654
Accrued compensation	12,495	7,100
Accrued royalties and license fees (including accrued royalties and license fees to a related party of $0 and $10,449 as of December 31, 2016 and December 31, 2015, respectively)	8,623	21,032
Accrued restructuring	271	342
Deferred revenue	44,865	31,112
Total current liabilities	84,340	70,626
Long-term accrued royalties (including long-term accrued royalties to a related party of $0 and $2,051 as of December 31, 2016 and December 31, 2015, respectively)	20,836	24,347
Other long-term liabilities	1,514	1,585
Total liabilities	106,690	96,558
Stockholders' equity:
Preferred stock, $0.0001 par value; 5,000 shares authorized at December 31, 2016 and December 31, 2015; no shares issued and outstanding at December 31, 2016 and December 31, 2015
Common stock, $0.0001 par value; 250,000 shares authorized at December 31, 2016 and December 31, 2015; 134,001 and 131,580 shares issued and outstanding at December 31, 2016 and December 31, 2015	13	13
Additional paid-in capital	571,243	557,748
Accumulated other comprehensive income/(loss)	246	(85)
Accumulated deficit	(338,688)	(251,248)
Total stockholders' equity	232,814	306,428
Total liabilities and stockholders' equity	$ 339,504	$ 402,986