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Debt - Maturities of Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Debt    
2019 $ 294  
2020 2,013  
2021 2,221  
2022 2,235  
2023 2,260  
Thereafter 78,107  
Long term debt $ 87,130 $ 70,976