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Commitments and Contingencies - Leases, Maturities of operating leases (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2019
USD ($)
Commitments and Contingencies  
2019 $ 434
2020 848
2021 753
2022 443
Present value adjustment (460)
Total lease liabilities 2,018
Less: current lease liabilities (602)
Long term lease liabilities $ 1,416
Maximum days allowed for cancellation of contracts prior written notice 90 days