Derivative Financial Instruments - Schedule of Offsetting Derivative Assets and Liabilities (Details) (Counterparty A: [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Jun. 30, 2014
Counterparty A: [Member]
Derivative [Line Items]
Derivative Asset, Gross Amount Reported on Balance Sheet	$ 1,139	$ 6,336
Derivative Asset - Netting Adjustment	(1,139)	(321)
Cash Collateral Posted	0	0
Derivative Assets - Net Exposure	0	6,015
Derivative Liability - Gross Amount Reported on Balance Sheet	4,859	321
Derivative Liability - Netting Adjustment	(1,139)	(321)
Derivative Liability - Cash Collateral Received	720	0
Derivative Liabilities - Net Exposure	$ 3,000	$ 0