Business and Summary of Significant Accounting Policies (Changes in Allowances) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Discription of Business Basis Of Presentation And Disclosure [Abstract]
Balance as of January 1,	$ 24,412	$ 22,505	$ 28,520
Current year increases	8,028	17,008	16,219
Write-offs, net of recoveries and other	(12,034)	(15,101)	(22,234)
Balance as of December 31,	$ 20,406	$ 24,412	$ 22,505