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Inventories (Details) - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Inventory, Raw Materials, Gross $ 0  
Inventory, Work in Process, Gross 8,302,000  
Inventory, Finished Goods, Gross 668,000  
Total inventories $ 8,970,000 $ 0