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Commitments and Contingencies (Schedule of Future Minimum Rental Payments for Operating Leases) (Details)
$ in Thousands
Dec. 31, 2015
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2015 $ 57,664
2016 54,417
2017 49,024
2018 39,857
2019 33,172
Thereafter 111,241
Operating leases, future minimum payments due, total $ 345,375