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Note 6 - Investments (Tables)
3 Months Ended
Sep. 30, 2016
Notes Tables  
Investment [Table Text Block]
    September 30, 2016   June 30, 2016
    Carrying Cost   Fair Value   Carrying Cost   Fair Value
    (in thousands)
Federal Reserve Bank Stock   $ 1,955     $ 1,955     $ 1,955     $ 1,955  
Federal Home Loan Bank Stock     1,886       1,886       1,886       1,886  
Mortgage-backed investment     115       130       116       131  
    $ 3,956     $ 3,971     $ 3,957     $ 3,972