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Lease Commitments (Schedule Of Minimum Future Rental Commitments Under Operating Leases) (Details)
$ in Thousands
Dec. 31, 2015
USD ($)
Leases, Operating [Abstract]  
Minimum lease commitments due in twelve months $ 70,512
Minimum lease commitments due in year two 65,807
Minimum lease commitments due in year three 62,364
Minimum lease commitments due in year four 58,664
Minimum lease commitments due in year five 57,047
Thereafter 221,589
Total $ 535,983