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Goodwill and Other Intangbiles - Summary of Finite Lived Intangible Assets (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Life 22 years  
Gross Carrying Amount $ 46,617  
Accumulated Amortization $ (4,199) $ (1,799)
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Life 23 years  
Gross Carrying Amount $ 40,823  
Accumulated Amortization $ (3,159) (1,353)
Trade name    
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Life 13 years  
Gross Carrying Amount $ 5,307  
Accumulated Amortization $ (919) (394)
Noncompetition agreements    
Finite-Lived Intangible Assets [Line Items]    
Weighted Average Life 7 years  
Gross Carrying Amount $ 487  
Accumulated Amortization $ (121) $ (52)