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Fair Value Measurements (Tables)
12 Months Ended
Sep. 30, 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]
September 30, 2018
Total Fair ValueQuoted Prices (Level 1)Significant Unobservable (Level 3)
Executive savings plan assets$747$747$-
Executive savings plan liabilities(631)(631)-
Contingent consideration liability(680)-(680)
Total$(564)$116$(680)

September 30, 2017
Total Fair ValueQuoted Prices (Level 1)Significant Unobservable (Level 3)
Executive savings plan assets$641$641$-
Executive savings plan liabilities(529)(529)-
Contingent consideration liability(786)-(786)
Total$(674)$112$(786)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Text Block]
Contingent Consideration Agreement
Fair Value at September 30, 2017$786
Issuances182
Settlements(391)
Net adjustments to fair value103
Fair Value at September 30, 2018$680