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Deferred Charges and Other Assets, net - Schedule of estimated amortization of intangible assets for the next five years and thereafter (Details)
$ in Thousands
Dec. 31, 2016
USD ($)
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
2017 $ 18,700
2018 14,606
2019 12,170
2020 9,221
2021 7,379
Thereafter 21,960
Allocated value net $ 84,036