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Investment Securities: Mortgage Backed Securities Policy (Details)
security in Thousands, $ in Thousands
3 Months Ended
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Jun. 30, 2015
security
Schedule of Available-for-sale Securities [Line Items]      
Principal payments from investment securities available for sale $ 4,048 $ 650  
Other-than-temporary impairments, investments $ 0 $ 0  
Available for sale | Private issue CMO      
Schedule of Available-for-sale Securities [Line Items]      
Number of investment securities held | security     0