Derivative Instruments - Schedule of Offsetting Derivative Asset and Liability Positions (Details) - Counterparty A - USD ($) $ in Thousands	Dec. 31, 2016	Jun. 30, 2016
Derivatives, Fair Value [Line Items]
Derivative asset, fair value	$ 1,142	$ 6,586
Derivative asset, netting adjustment	(1,057)	0
Derivative asset, cash collateral posted	0	0
Derivative asset, net	85	$ 6,586
Derivative liability, fair value	1,579
Derivative liability, netting adjustment	1,057
Derivative liability, cash collateral posted	0
Derivative liability, net	$ 522

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

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