Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Transactions - Summary of Net Gains (Losses) on Derivative Instruments (Details)

v3.20.1
Derivative Instruments and Hedging Transactions - Summary of Net Gains (Losses) on Derivative Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Derivative [Line Items]        
Gains (losses) on derivative instruments: $ 13,164 $ 28,154 $ 10,808 $ 20,150
Future commodity and forward contracts        
Derivative [Line Items]        
Unrealized gains on open future commodity and forward contracts and open sale and purchase commitments, net 16,868 27,069 26,623 15,579
Commodity Contract        
Derivative [Line Items]        
Realized (losses) gains on future commodity contracts, net $ (3,704) $ 1,085 $ (15,815) $ 4,571