Annual report pursuant to Section 13 and 15(d)

Inventories (Details)

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Inventories (Details) (USD $)
12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Inventory Disclosure [Abstract]    
Premium on metals position $ 3,285,000 $ 1,787,000
Premium on inventory 5,849,000 1,787,000
Commemorative coin inventory, held at lower of cost or market 2,564,000 0
Unrealized gains (losses) included in inventory balance 3,800,000  
Borrowed metals 8,700,000 20,100,000
Product under financing arrangement 24,600,000 38,600,000
Inventories loaned under consignment 11,100,000 2,600,000
Inventory subject to repurchase included in inventory $ 24,600,000