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Income Taxes (Valuation Allowance Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Valuation Allowance [Line Items]
Valuation allowance released due in part to positive cumulative earnings, length of time	3 years
Increase in valuation allowance	$ 1,200,000	$ 4,100,000
Valuation allowance	77,629,000	76,452,000	72,327,000	98,989,000
U.S. Federal
Valuation Allowance [Line Items]
Valuation allowance	68,800,000
Foreign
Valuation Allowance [Line Items]
Valuation allowance	$ 8,800,000

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

The amount of the change in the period in the valuation allowance for a specified deferred tax asset.