Annual report pursuant to Section 13 and 15(d)

Assets and Liabilities, at Fair Value (Narrative) (Details)

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Assets and Liabilities, at Fair Value (Narrative) (Details) - USD ($)
12 Months Ended 24 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Fair Value Disclosures [Abstract]      
Commemorative coins, held at lower of cost or market $ 1,518,000 $ 2,564,000 $ 1,518,000
Payments to acquire other investments 2,000,000 500,000 $ 2,500,000
Realized gains on cost method investment $ 0 $ 0