Condensed Consolidated Statements of Cash Flows Statement (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net Loss, Including Portion Attributable to Noncontrolling Interest	$ (37,686)	$ (8,367)
Adjustments to reconcile net loss including noncontrolling interests in operating subsidiaries to net cash provided by (used in) operating activities:
Depreciation and amortization	30,166	24,405
Non-cash stock compensation	10,068	11,426
Excess tax benefits from stock-based compensation	0	847
Changes in assets and liabilities:
Accounts receivable	(18,844)	(6,938)
Prepaid expenses and other assets	1,724	(5,863)
Accounts payable and accrued expenses / costs	5,736	7,362
Royalties and contingent legal fees payable	9,865	7,478
Deferred income tax	(1,668)	(10,552)
Net cash provided by (used in) operating activities	(639)	18,104
Cash flows from investing activities:
Purchases of property and equipment	(97)	(365)
Purchase of available-for-sale investments	(33,359)	(175,042)
Maturities and sale of available-for-sale investments	88,741	93,809
Investments in patents/ patent rights	(22,096)	(6,260)
Net cash provided by (used in) investing activities	33,189	(87,858)
Cash flows from financing activities:
Distributions to noncontrolling interests in operating subsidiary	867	0
Payments of Dividends	(12,513)	(6,149)
Contributions from noncontrolling interests in operating subsidiary	0	1,920
Excess tax benefits from stock-based compensation	0	847
Proceeds from exercises of stock options	185	241
Net cash used in financing activities	(13,195)	(3,141)
Increase (decrease) in cash and cash equivalents	19,355	(72,895)
Cash and cash equivalents, beginning	126,685	221,804
Cash and cash equivalents, ending	146,040	148,909
Patent acquisition costs included in accrued expenses	$ 3,000	$ 8,508