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Commitments And Contingencies (Minimum Future Lease Payments) (Details)
$ in Thousands
Jun. 30, 2017
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2017 (remainder of year) $ 38,784
2018 66,144
2019 39,172
2020 27,723
2021 22,453
Thereafter 68,175
Total minimum lease payments 262,451
Minimum sublease rentals excluded from the commitments schedule $ 100