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Note 8: Earnings Per Share: Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)
3 Months Ended 6 Months Ended 9 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Details            
Net income available to common shareholders $ 5,099 $ 7,094 $ 20,644 $ 21,348    
Weighted Average Number of Shares Outstanding, Basic 9,197,370 9,323,348 9,210,559 9,152,181    
Stock options under treasury stock method 7,422 7,539 10,848 11,076    
Weighted Average Number of Shares Outstanding, Diluted 9,204,792 9,330,887 9,221,407 9,163,257    
Basic earnings per common share $ 0.55 $ 0.76 $ 2.24 $ 2.33 $ 2.24 $ 2.33
Diluted earnings per common share $ 0.55 $ 0.76 $ 2.24 $ 2.33 $ 2.24 $ 2.33