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Inventories (Tables)
 3 Months Ended
Mar. 31, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
A summary of inventories is as follows:
 
 
 
March 31,
 
December 31,
 
 
 
2017
 
2016
 
 
 
 
 
 
 
Jewelry
 
$
8,501,740
 
$
7,193,126
 
Scrap gold
 
 
552,267
 
 
885,194
 
Bullion
 
 
321,156
 
 
292,591
 
Rare coins and Other
 
 
165,414
 
 
1,013,225
 
 
 
 
 
 
 
 
 
 
 
$
9,540,577
 
$
9,384,136