Condensed Consolidated Statements of Cash Flows (Unaudited) Statement (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ (4,297)	$ 20,603
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,212	12,586
Amortization of deferred financing fees and accretion of debt discount	4,790	4,515
Deferred revenue recognized	(52,523)	(107,316)
Increase (Decrease) in deferred revenue	166,353	24,570
Deferred income taxes	(5,622)	7,313
Share-based Compensation	7,791	3,135
Other than Temporary Impairment Losses, Investments	6,669	0
Other	57	849
Decrease (increase) in assets:
Receivables	109,265	(10,754)
Other current assets	(619)	32
Increase (decrease) in liabilities:
Accounts payable	1,915	906
Other accrued expenses	(27,783)	930
Accrued taxes payable	(2,458)	1,301
Net cash provided by operating activities	219,750	(41,330)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of short-term investments	(213,432)	(211,271)
Sales of short-term investments	129,925	193,055
Purchases of property and equipment	(1,180)	(1,030)
Capitalized patent costs	(14,735)	(14,865)
Acquisition of patents	(13,013)	(13,000)
Long-term investments	(445)	0
Net cash used in investing activities	(112,880)	(47,111)
CASH FLOWS FROM FINANCING ACTIVITIES:
Noncontrolling Interest, Increase from Business Combination	5,101	0
Net proceeds from exercise of stock options	641	590
Payments on long-term debt, including capital lease obligations	0	(180)
Dividends paid	(4,115)	(9,040)
Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Financing Activities	683	1,590
Repurchase of common stock	0	(77,745)
Net cash provided (used) by financing activities	2,310	(84,785)
NET INCREASE IN CASH AND CASH EQUIVALENTS	109,180	(173,226)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	349,843	342,211
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 459,023	$ 168,985

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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