CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues
Licenses Revenue	$ 0	$ 1,000	$ 575
Total revenues	164,594	100,178	464,150	344,294
Operating expenses
General and administrative	5,686	7,925	17,188	21,894
Operating income	158,908	92,253	446,962	322,400
Non-operating expense, net
Interest and other income, net	75	53	207	202
Interest expense	(9,387)	(6,118)	(29,770)	(18,169)
Losses on Extinguishment of Debt	0	0	(6,143)	0
Total non-operating expense, net	(9,312)	(6,065)	(35,706)	(17,967)
Income before income taxes	149,596	86,188	411,256	304,433
Income tax expense	47,361	29,963	144,083	100,995
Net income	102,235	56,225	267,173	203,438
Net income per share
Basic (in Dollars per Share)	$ 0.64	$ 0.40	$ 1.70	$ 1.45
Net income per diluted share (in Dollars per Share)	$ 0.61	$ 0.36	$ 1.62	$ 1.31
Weighted average shares outstanding
Basic (in Shares)	160,268	139,848	157,274	139,830
Diluted (in Shares)	166,894	154,593	165,141	155,366
Cash dividends declared per common share (in Dollars per Share)	$ 0.00	$ 0.00	$ 0.60	$ 0.60
Queen et al. patents [Member]
Revenues
Royalty revenues	123,916	96,314	355,008	331,778
Acquired rights [Member]
Revenues
Royalty revenues	$ 27,602	$ 0	$ 73,807	$ 0