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Leases - Supplemental Balance Sheet Information (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Leases    
Operating lease right-of-use assets $ 2,227 $ 2,459
Current portion of operating lease liabilities, included in accrued liabilities 596 577
Operating lease liabilities, net of current portion 1,767 2,021
Total operating lease liabilities $ 2,363 $ 2,598
Weighted average remaining lease term for operating leases (in years) (Year) 4 years 4 years 4 months 24 days
Weighted average discount rate for operating leases 6.10% 6.10%