Derivative Instruments - Schedule of Notional Volumes of Derivative Instruments (Details) - lb lb in Thousands	3 Months Ended
	Mar. 31, 2017	Jun. 30, 2016
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	(11,823)	(33,980)
Derivative contract term	12 months
Cash Flow Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	(11,663)	(32,550)
Cash Flow Hedging | Not Designated as Hedging Instrument | Long
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	(873)	(1,618)
Cash Flow Hedging | Not Designated as Hedging Instrument | Short
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	(713)	(188)