Schedule II - Valuation and Qualifying Accounts (Details) (Valuation Allowance of Deferred Tax Assets [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Valuation Allowance of Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Balance	$ 179,183	$ 209,757	$ 214,269	$ 223,612
Valuation Allowances and Reserves, Charged to Cost and Expense	(16,860)	(1,626)	(509)
Valuation Allowances and Reserves, Write-offs	(15,555)	(1,486)	(8,163)
Valuation Allowances and Reserves, Charged to Other Accounts	1,841	(1,400)	(671)
Valuation Allowances and Reserves, Balance	$ 179,183	$ 209,757	$ 214,269	$ 223,612