Derivative Instruments - Schedule of Notional Volumes of Derivative Instruments (Details) - lb lb in Thousands	3 Months Ended
	Dec. 31, 2016	Jun. 30, 2016
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	(18,908)	(33,980)
Derivative contract term	12 months
Cash Flow Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	(17,250)	(32,550)
Cash Flow Hedging | Not Designated as Hedging Instrument | Long
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	(1,658)	(1,618)
Cash Flow Hedging | Not Designated as Hedging Instrument | Short
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	0	(188)