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Assets Held for Sale - Narrative (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Property, Plant and Equipment [Line Items]      
Total assets held for sale $ 6,902,600 $ 5,363,403  
Disposal Group, Held-for-sale, Not Discontinued Operations      
Property, Plant and Equipment [Line Items]      
Total assets held for sale $ 6,902,600 $ 5,363,403 $ 6,900,000