Income Taxes (Deferred Portion Of Tax Provision (Benefit)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Amortization of franchise rights	$ 514	$ 570	$ 628
Amortization of other intangibles	1,142	961	535
Accrued expenses, deducted for tax when paid	(2,076)	4,423	5,069
Capitalized costs for books, deducted for tax	7,448	4,693	6,809
Depreciation	(1,709)	(951)	(9,804)
Federal impact of unrecognized tax benefits	331	(921)	1,353
Foreign tax credit carryforwards	5,719	(5,719)	5,434
Other, net	5,787	4,314	(4,272)
Total deferred portion of the tax provision (benefit)	$ 17,156	$ 7,370	$ 5,752