Quarterly report pursuant to Section 13 or 15(d)

Hedging Transactions (Outstanding Commitments) (Details)

v2.4.0.8
Hedging Transactions (Outstanding Commitments) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Jun. 30, 2013
Derivative [Line Items]    
Purchase commitments $ 391,320 $ 461,883
Sale commitments (138,805) (272,044)
Margin sales commitments (15,765) (13,651)
Precious metals forward contracts at market values
    
Derivative [Line Items]    
Open derivative contracts 167,928 84,999
Derivative assets — future contracts
    
Derivative [Line Items]    
Open derivative contracts $ 171,728 $ 171,272