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Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - Customer Relationships - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Cost $ 96,598 $ 6,300
Accumulated Amortization (11,203) (5,202)
Carrying Value $ 85,395 $ 1,098