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Inventories (Details) (USD $)
Mar. 31, 2013
Dec. 31, 2012
Inventories [Abstract]    
Jewelry $ 7,334,451 $ 6,979,144
Scrap 1,785,862 2,354,338
Bullion 2,876,322 1,558,414
Rare coins 1,270,002 1,040,833
Total $ 13,266,637 $ 11,932,729