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Debt - Maturities of Long-Term debt (Details)
$ in Thousands
Jun. 30, 2019
USD ($)
Debt Disclosure [Abstract]  
2019 (remaining six months) $ 1,607
2020 3,204
2021 3,211
2022 34,863
2023 3,116
Thereafter 2,756
Total long-term debt, current and non-current $ 48,757