Annual report pursuant to Section 13 and 15(d)

Derivative Instrument and Hedging Transactions (Outstanding Commitments) (Details)

v3.5.0.2
Derivative Instrument and Hedging Transactions (Outstanding Commitments) (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Jun. 30, 2015
Derivative [Line Items]    
Purchase commitments $ 550,810 $ 444,023
Sales commitments (237,325) (249,081)
Margin sales commitments (12,439) (12,430)
Open derivative contracts 474,979 310,316
Forward contracts    
Derivative [Line Items]    
Open derivative contracts 188,530 202,323
Future contracts    
Derivative [Line Items]    
Open derivative contracts $ 286,449 $ 107,993