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Derivative and Other Financial Instruments with Off-Balance Sheet Risks: Off-Balance-Sheet Credit Exposure, Policy (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Jun. 30, 2016
Jun. 30, 2015
Derivative [Line Items]      
Commitments to Extend Credit $ 9,953 $ 11,258  
Loans Held for Investment and Loans Held for Sale [Member]      
Derivative [Line Items]      
Commitments to Extend Credit $ 103,200   $ 191,700