Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Goodwill and Other Intangible Assets (Schedule of Estimated Amortization Expense Relating to Intangible Assets) (Details)

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Goodwill and Other Intangible Assets (Schedule of Estimated Amortization Expense Relating to Intangible Assets) (Details)
$ in Thousands
Jun. 30, 2018
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Remaining 6 months of 2018 $ 16,179
2019 31,973
2020 31,637
2021 31,068
2022 9,965
Thereafter 4,217
Net Book Value $ 125,039