Commitments And Contingencies (Schedule Of Noncancellable Minimum Commitments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
Minimum payments due, one year	$ 15,138
Minimum payments due, two years	6,283
Minimum payments due, three years	2,807
Minimum payments due, four years	2,170
Minimum payments due, thereafter	9,193
Operating leases, future minimum payments due	$ 35,591