Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Narrative) (Details)

v2.4.0.8
Summary of Significant Accounting Policies (Narrative) (Details) (USD $)
 12 Months Ended
Jun. 30, 2014
Segment
Jun. 30, 2013
Jun. 30, 2012
Feb. 18, 2014
Property, Plant and Equipment [Line Items]        
Number of reportable segments 1      
Premium on metals position, marked to market $ (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    
Borrowed metals 8,700,000 20,100,000    
Inventories loaned under consignment 11,100,000 2,600,000    
Product under financing arrangement 24,600,000 38,600,000    
Ownership percentage       2.50%
Investments 500,000 0   500,000
Sales of Inventory to an entity from which Parent purchased non-controlling cost method investment 73,109,000      
Advances received from an entity which Parent purchased non-controlling cost method investment 922,000      
Advertising expense 800,000 600,000 700,000  
Shipping, handling costs 5,700,000 4,400,000 4,400,000  
Inventory subject to repurchase included in inventory $ 24,600,000      
Minimum
        
Property, Plant and Equipment [Line Items]        
Estimated useful lives of related assets 3 years      
Estimated useful lives of intangibles 4 years      
Maximum
        
Property, Plant and Equipment [Line Items]        
Estimated useful lives of related assets 5 years      
Estimated useful lives of intangibles 15 years