Derivative Instruments - Schedule of Notional Volumes of Derivative Instruments (Details) - lb lb in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	43,459	35,159
Derivative contract term	18 months
Cash Flow Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	40,913	33,038
Cash Flow Hedging | Not Designated as Hedging Instrument | Long [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	2,546	2,121