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Leases - Maturity of Operating Lease Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Jan. 01, 2019
Leases [Abstract]    
2020 (nine months remaining) $ 392  
2021 278  
Total lease payments 670  
Less imputed interest (39)  
Present value of operating lease liabilities $ 631 $ 949