Valuation and Qualifying Accounts Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Movement in Valuation Allowances and Reserves [Roll Forward]
Other Adjustments	$ 1,851	$ (71)
Valuation Allowance of Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of Period	29,953	24,600
Other Adjustments	(481)	(3,165)
Additions Charged to Cost and Expense	88	8,518
Balance at End of Period Noncurrent	$ 29,560	$ 29,953