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Note 14. Earnings Per Share Textuals (Details)
3 Months Ended
Dec. 31, 2017
shares
Performance Shares | Stock Option and Incentive Plan 2014  
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 290,000
Deferred Share Units Director Compensation | Non-Employee Directors Stock Compensation Deferral Plan  
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 15,000