Uncertain Tax Positions (Long-Term Liability For Unrecognized Tax Benefits, Excluding Interest And Penalties) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Tax Uncertainties [Abstract]
Deferred income taxes (contra assets)	$ 12,445	$ 12,445	$ 12,445
Accrued Income Taxes Unrecognized Benefit, Current	482	0	0
Accrued Income Taxes Unrecognized Benefit, Long Term	22,473	22,244	16,749
Total liability for unrecognized tax benefits	$ 35,400	$ 34,689	$ 29,194	$ 50,064