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Commitments and Contingencies (Schedule of Annual Operating Lease Payments) (Details)
$ in Thousands
Dec. 31, 2016
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2017 $ 8,960
2018 7,589
2019 4,791
2020 4,127
2021 2,990
Thereafter 2,886
Total operating lease payments $ 31,343