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Related Parties - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2018
Sep. 30, 2019
Dec. 31, 2018
Related Party Transaction [Line Items]        
Receivables (payables) to related parties     $ 0 $ 0
Board of Directors Chairman        
Related Party Transaction [Line Items]        
Rent reimbursements $ 100,000 $ 100,000