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Earnings Per Share: Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2014
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]                      
Income (Numerator), basic and diluted earnings per share $ 2,555 $ 1,494 $ 982 $ 2,443 $ 2,485 $ 2,600 $ 2,328 $ 2,390 $ 7,474 $ 9,803 $ 6,606
Basic EPS, Shares (Denominator)                 8,347,564 8,996,952 9,926,323
Diluted EPS, Shares (Denominator)                 8,541,554 9,173,857 10,110,785
Basic EPS, Per-Share Amount (in dollars per share) $ 0.32 $ 0.18 $ 0.12 $ 0.29 $ 0.29 $ 0.29 $ 0.26 $ 0.26 $ 0.90 $ 1.09 $ 0.67
Diluted EPS, Per-Share Amount (in dollars per share) $ 0.31 $ 0.18 $ 0.11 $ 0.28 $ 0.28 $ 0.29 $ 0.25 $ 0.25 $ 0.88 $ 1.07 $ 0.65
Employee Stock Option [Member]                      
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]                      
Effect of dilutive shares                 127,546 115,341 153,219
Restricted Stock [Member]                      
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]                      
Effect of dilutive shares                 66,444 61,564 31,243