Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Contingency [Line Items]
Current tax (benefit) provision	$ (26,343,000)	$ (115,318,000)	$ 907,000
Extraterritorial income exclusion	6,177,000	11,200,000
Potential change in unrecognized tax benefits during next twelve months	2,600,000
Total deferred income tax provision	28,184,000	22,003,000	40,468,000
Deferred tax (provision) benefit for adjustments in other comprehensive loss	10,127,000	22,612,000	(39,416,000)
Liability for UTPs	79,688,000	80,732,000
Unrecognized tax benefits, interest on income taxes accrued	4,100,000
Unrecognized tax benefits, income tax penalties accrued	9,000,000
Unrecognized tax benefits that would reduce the income tax provision	36,900,000
Excess tax benefit associated with stock based compensation	(3,128,000)	16,919,000	1,198,000
Valuation allowance	7,228,000	7,108,000
Changes in valuation allowance		(3,800,000)	(300,000)
Internal Revenue Service (IRS) [Member]
Income Tax Contingency [Line Items]
Statute of limitations to expire during next twelve months	2010
Operating loss carryforwards	290,400,000
Operating loss carryforwards, limitations on use	32,600,000
State and Local Jurisdiction [Member]
Income Tax Contingency [Line Items]
Statute of limitations to expire during next twelve months	2007 and 2009	2007 and 2008
New York [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	24,100,000
California [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	77,800,000
Research Credit [Member]
Income Tax Contingency [Line Items]
Federal AMT credits	1,200,000
Other Tax Carryforward, AMT Tax Credits [Member]
Income Tax Contingency [Line Items]
Federal AMT credits	9,000,000
Other Tax Carryforward, AMT Tax Credits [Member] | State and Local Jurisdiction [Member]
Income Tax Contingency [Line Items]
Federal AMT credits	11,900,000
Continuing Operations [Member]
Income Tax Contingency [Line Items]
Provision benefit for reversal of UTP liability from statute expiration		86,700,000
Changes in valuation allowance	100,000	(2,300,000)	(700,000)
Continuing Operations [Member] | Current Tax [Member]
Income Tax Contingency [Line Items]
Provision benefit for reversal of UTP liability from statute expiration		112,900,000
Continuing Operations [Member] | Deferred Tax [Member]
Income Tax Contingency [Line Items]
Provision benefit for reversal of UTP liability from statute expiration		(26,200,000)
Discontinued Operations [Member]
Income Tax Contingency [Line Items]
Changes in valuation allowance		$ (1,500,000)	$ 400,000
Maximum [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards, expiration dates	Dec. 31, 2033
Minimum [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards, expiration dates	Jan. 01, 2016