Derivative Instruments - Schedule of Offsetting Derivative Asset and Liability Positions (Details) - Counterparty A - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Derivatives, Fair Value [Line Items]
Derivative asset, fair value	$ 523	$ 6,586
Derivative asset, netting adjustment	(523)	0
Derivative asset, cash collateral posted	0	0
Derivative asset, net	0	$ 6,586
Derivative liability, fair value	862
Derivative liability, netting adjustment	(523)
Derivative liability, cash collateral posted	0
Derivative liability, net	$ 339

Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

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