Commitments And Contingencies (Operating Lease Rental Expense) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Leases Rent Expense [Abstract]
Minimum rentals	[1]	$ 96,579	$ 108,466	$ 101,721
Contingent rentals		14,929	16,875	18,178
Less: Sublease rentals		(322)	(868)	(646)
Total rent expense		111,186	124,473	119,253
Common area maintenance, parking and storage.		$ 9,100	$ 9,600	$ 9,700

[1] Minimum rentals include all lease payments as well as fixed and variable common area maintenance, parking and storage fees, which were approximately $9.1 million, $9.6 million, and $9.7 million during the years ended December 31, 2015, 2014, and 2013, respectively.