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Acquired Assets - Proforma Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2016
Property, Plant and Equipment [Abstract]    
Revenue of acquiree since acquisition $ 8,025 $ 14,804
Earnings of acquiree since acquisition 1,464 2,460
Acquisition and transaction costs 239 1,009
Total income 61,236 192,581
Net income from continuing operations $ 29,818 $ 65,667