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Leases - Maturities of Operating Lease Liabilities (Details)
$ in Thousands
Mar. 31, 2019
USD ($)
Leases [Abstract]  
2019 $ 1,805
2020 2,443
2021 2,437
2022 820
Total lease payments 7,505
Less imputed interest (1,265)
Total lease liabilities $ 6,240