Condensed Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenue:
Royalty and license fees	$ 67,255	$ 59,977
Total revenue	67,255	59,977
Operating expenses:
Cost of revenue	1,400	87
Research, development and other related costs	26,012	10,069
Selling, general and administrative	41,205	11,094
Amortization expense	28,555	6,022
Litigation expense	9,978	6,550
Total operating expenses	107,150	33,822
Operating income (loss)	(39,895)	26,155
Interest expense	(6,459)	0
Other income and expense, net	46	807
Income (loss) before taxes	(46,308)	26,962
Provision for (benefit from) income taxes	(35,279)	8,872
Net income (loss)	$ (11,029)	$ 18,090
Basic and diluted net income (loss) per share:
Basic (in dollars per share)	$ (0.22)	$ 0.36
Diluted (in dollars per share)	(0.22)	0.36
Cash dividends declared per share (in dollars per share)	$ 0.20	$ 0.20
Weighted average number of shares used in per share calculations-basic (in shares)	49,139	49,998
Weighted average number of shares used in per share calculations-diluted (in shares)	49,139	50,566