Offsetting Derivative and Other Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Gross Amount of Recognized Assets or Liabilities [Member]
Derivative [Line Items]
Derivative Assets Interest Rate Contracts	$ 2	$ 623
Derivative assets	2	623
Derivative Liabilities Interest Rate Contracts	207	0
Derivative liabilities	207	0
Gross Amount Offset in the Condensed Statement of Financial Condition [Member]
Derivative [Line Items]
Derivative Assets Interest Rate Contracts	0	0
Derivative assets	0	0
Derivative Liabilities Interest Rate Contracts	0	0
Derivative liabilities	0	0
Net Amount of Assets or Liabilities Presented in the Condensed Statement of Financial Condition [Member]
Derivative [Line Items]
Derivative Assets Interest Rate Contracts	2	623
Derivative assets	2	623
Derivative Liabilities Interest Rate Contracts	207	0
Derivative liabilities	207	0
Gross Amount Not Offset in the Condensed Statement of Financial Condition, Financial Instruments [Member]
Derivative [Line Items]
Derivative Assets Interest Rate Contracts	0	0
Derivative assets	0	0
Derivative Liabilities Interest Rate Contracts	0	0
Derivative liabilities	0	0
Gross Amount Not Offset in the Condensed Statement of Financial Condition, Cash Collateral Received [Member]
Derivative [Line Items]
Derivative Assets Interest Rate Contracts	0	0
Derivative assets	0	0
Derivative Liabilities Interest Rate Contracts	0	0
Derivative liabilities	0	0
Net Amount [Member]
Derivative [Line Items]
Derivative Assets Interest Rate Contracts	2	623
Derivative assets	2	623
Derivative Liabilities Interest Rate Contracts	207	0
Derivative liabilities	$ 207	$ 0