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Commitments and Contingencies (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Future Minimum Rental Payments For Operating Leases [Line Items]  
2019 $ 1,562
2020 1,369
2021 1,235
2022 1,067
2023 707
Thereafter 2,023
Operating Leases, Future Minimum Payments Due $ 7,963