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Inventories (Tables)
 12 Months Ended
Dec. 31, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
Inventories consist of the following:
 
 
 
December 31,
 
 
 
2017
 
2016
 
Jewelry
 
$
6,344,948
 
$
7,193,126
 
Scrap Gold
 
 
1,512,156
 
 
885,194
 
Bullion
 
 
414,867
 
 
292,591
 
Rare Coins and Other
 
 
325,719
 
 
1,013,225
 
 
 
$
8,597,690
 
$
9,384,136