Income Taxes (Summary of Additional Income Tax Disclosures) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Abstract]
Tax benefit (provision) on (loss) income from discontinued operations	$ 14,482	$ 2,995	$ (10,157)	[1]
Tax provision on Sale of discontinued operations			(267,451)	[1]
Excess tax benefit from equity compensation recorded to paid-in-capital	1,864	(3,128)	16,919
Deferred tax (provision) benefit for adjustments in other comprehensive income (loss) (See Note 4)	$ 4,919	$ (10,127)	$ (22,612)

[1] Reference to the year ended December 31, 2012 in the table above is for the period January 1, 2012 to November 2, 2012, the date of the Sale.