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Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
Jun. 30, 2019
Jan. 01, 2019
Dec. 31, 2018
Accounting Policies [Abstract]      
Operating lease right-of-use assets $ 1,660,631 $ 1,970,000 $ 0
Total $ 2,123,486 $ 2,503,000