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Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Jan. 01, 2019
Recent Accounting Pronouncements    
Operating lease liability $ 735  
ASU 2016-02 | Restatement Adjustment    
Recent Accounting Pronouncements    
Operating lease, ROU asset   $ 1,200
Operating lease liability   $ 1,200