Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Commitments And Contingencies (Schedule Of Minimum Payments Under Lease Agreements) (Details)

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Commitments And Contingencies (Schedule Of Minimum Payments Under Lease Agreements) (Details) - Property Rental Agreements [Member]
$ in Thousands
Dec. 31, 2016
USD ($)
Operating Leased Assets [Line Items]  
2017 $ 11,155
2018 11,056
2019 8,754
2020 8,828
2021 8,967
Thereafter 51,343
Head lease payments $ 100,103