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Inventories (Details) - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Inventories $ 10,617,516 $ 9,509,454
DGSE    
Inventories 9,443,244 8,615,019
DGSE | Resale    
Inventories 9,323,477 8,213,551
DGSE | Recycle    
Inventories 119,767 401,468
ECHG    
Inventories 1,174,272 894,435
ECHG | Resale    
Inventories 642,598 351,958
ECHG | Recycle    
Inventories $ 531,674 $ 542,477