Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.3
Derivative Instruments and Hedging Transactions (Outstanding Commitments) (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Jun. 30, 2019
Derivative [Line Items]    
Purchase commitments $ 285,267 $ 166,600
Sales commitments (236,353) (158,870)
Margin sales commitments (10,048) (11,652)
Open derivative contracts 257,349 205,830
Forward contracts    
Derivative [Line Items]    
Open derivative contracts 118,988 133,612
Future contracts    
Derivative [Line Items]    
Open derivative contracts $ 138,361 $ 72,218