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Commitments and Contingencies - Capital Leases (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]    
2020 (remaining) $ 205  
2021 178  
2022 39  
Total 422  
Interest included in the above payments (32)  
Amount payable without interest 390  
Short-term minimum capital lease payments (included in accrued liabilities) 184 $ 258
Long-term minimum capital lease payments $ 206