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Inventories - Schedule of Inventories (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Jewelry $ 7,040,262 $ 7,001,477
Scrap gold/silver 1,301,312 1,205,111
Bullion 1,255,631 801,717
Rare coins and Other 718,456 756,789
Inventories $ 10,315,661 $ 9,765,094