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Fair Value Measurements (Tables)
6 Months Ended
Mar. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
March 31, 2018
Total Fair ValueQuoted Prices (Level 1)Significant Unobservable Inputs (Level 3)
Executive savings plan assets$686$686$-
Executive savings plan liabilities(572)(572)-
Contingent consideration(467)-(467)
Total$(353)$114$(467)

September 30, 2017
Total Fair ValueQuoted Prices (Level 1)Significant Unobservable Inputs (Level 3)
Executive savings plan assets$641$641$-
Executive savings plan liabilities(529)(529)-
Contingent consideration(786)-(786)
Total$(674)$112$(786)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Text Block]
Contingent Consideration Agreements
Fair Value at September 30, 2017$786
Settlements(390)
Net Adjustments to Fair Value71
Fair Value at March 31, 2018$467