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Commitments and Contingencies (Details 2) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2011 Customer group source year	Sep. 30, 2010	Sep. 30, 2011 Customer step year statement group source	Sep. 30, 2010	Dec. 31, 2010
Contractual obligations
Remainder of 2011	$ 8,446,000		$ 8,446,000
2012	35,193,000		35,193,000
2013	31,762,000		31,762,000
2014	199,792,000		199,792,000
2015	6,335,000		6,335,000
Thereafter	27,838,000		27,838,000
Total	309,366,000		309,366,000
Unrecognized tax benefits	16,600,000		16,600,000		11,800,000
Unrecognized tax benefits, reduction of long-term deferred tax assets, before federal tax benefit	8,600,000		8,600,000		7,200,000
Unrecognized tax benefits included in long-term income taxes payable	8,000,000		8,000,000		4,600,000
Terms of Noncancellable License Agreement, Minimum (in years)	1		1
Rent expense	700,000	1,900,000	2,000,000	5,500,000
Deferred rent	500,000		500,000		500,000
Payments made by the Company on behalf of current and former officers	800,000	1,200,000
Cumulative payments made by the Company on behalf of current and former officers	18,400,000	14,900,000	18,400,000	14,900,000
Imputed financing obligation
Contractual obligations
Remainder of 2011	1,214,000		1,214,000
2012	5,470,000		5,470,000
2013	5,739,000		5,739,000
2014	5,876,000		5,876,000
2015	6,014,000		6,014,000
Thereafter	27,838,000		27,838,000
Total	52,151,000		52,151,000
Leases
Contractual obligations
Remainder of 2011	811,000		811,000
2012	2,083,000		2,083,000
2013	372,000		372,000
2014	357,000		357,000
2015	321,000		321,000
Total	3,944,000		3,944,000
Software licenses
Contractual obligations
Remainder of 2011	2,108,000		2,108,000
2012	2,348,000		2,348,000
2013	359,000		359,000
2014	80,000		80,000
Total	4,895,000		4,895,000
CRI retention bonus
Contractual obligations
2012	16,667,000		16,667,000
2013	16,667,000		16,667,000
2014	16,666,000		16,666,000
Total	50,000,000		50,000,000
Convertible notes.
Contractual obligations
2014	172,500,000		172,500,000
Total	172,500,000		172,500,000
Interest payments related to convertible notes
Contractual obligations
Remainder of 2011	4,313,000		4,313,000
2012	8,625,000		8,625,000
2013	8,625,000		8,625,000
2014	4,313,000		4,313,000
Total	$ 25,876,000		$ 25,876,000

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