Valuation and Qualifying Accounts Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Movement in Valuation Allowances and Reserves [Roll Forward]
Other Adjustments	$ 1,740	$ 1,851
Valuation Allowance of Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of Period	138,910	124,244	115,138
Other Adjustments	4,117	1,811	(4,701)
Additions Charged to Cost and Expense	17,999	12,855	13,807
Balance at End of Period Noncurrent	$ 161,026	$ 138,910	$ 124,244