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Summary of Significant Accounting Policies - Other (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Jan. 01, 2019
Recently Issued Accounting Pronouncements    
Lease, Practical Expedient, Use of Hindsight false  
Lease, Practical Expedients, Package true  
Operating lease liabilities $ 7,350  
Accounting Standards Update 2016-02    
Recently Issued Accounting Pronouncements    
Right-to-use assets   $ 8,025
Operating lease liabilities   $ 8,813