Condensed Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenue:
Royalty and license fees	$ 88,508	$ 62,433	$ 247,085	$ 189,430
Total revenue	88,508	62,433	247,085	189,430
Operating expenses:
Cost of revenue	1,667	99	4,370	238
Research, development and other related costs	25,840	8,622	78,165	28,997
Selling, general and administrative	33,995	12,491	108,202	34,751
Amortization expense	27,769	6,052	84,475	18,126
Litigation expense	9,163	580	27,368	12,422
Total operating expenses	98,434	27,844	302,580	94,534
Operating income (loss)	(9,926)	34,589	(55,495)	94,896
Interest expense	(7,371)	0	(20,876)	0
Other income and expense, net	739	864	1,005	2,473
Income (loss) before taxes	(16,558)	35,453	(75,366)	97,369
Provision for (benefit from) income taxes	(4,442)	11,634	(13,164)	31,977
Net income (loss)	$ (12,116)	$ 23,819	$ (62,202)	$ 65,392
Basic and diluted net income (loss) per share:
Basic (in dollars per share)	$ (0.24)	$ 0.49	$ (1.26)	$ 1.33
Diluted (in dollars per share)	(0.24)	0.48	(1.26)	1.31
Cash dividends declared per share (in dollars per share)	$ 0.20	$ 0.20	$ 0.6	$ 0.6
Weighted average number of shares used in per share calculations-basic (in shares)	49,469	48,545	49,293	49,096
Weighted average number of shares used in per share calculations-diluted (in shares)	49,469	49,304	49,293	49,803