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Fair Value Measurements (Tables)
 9 Months Ended
Jun. 30, 2019
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
 
June 30, 2019
 
 
 
Total Fair Value
 
 
Quoted Prices (Level 1)
 
 
Significant Unobservable Inputs (Level 3)
Executive savings plan assets
 
$
773

 
$
773

 
$
—

Executive savings plan liabilities
 
 
(656
)
 
 
(656
)
 
 
—

Contingent consideration
 
 
(108
)
 
 
—

 
 
(108
)
Total
 
$
9

 
$
117

 
$
(108
)

 
September 30, 2018
 
 
 
Total Fair Value
 
 
Quoted Prices (Level 1)
 
 
Significant Unobservable Inputs (Level 3)
Executive savings plan assets
 
$
747

 
$
747

 
$
—

Executive savings plan liabilities
 
 
(631
)
 
 
(631
)
 
 
—

Contingent consideration
 
 
(680
)
 
 
—

 
 
(680
)
Total
 
$
(564
)
 
$
116

 
$
(680
)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

 
 
 
Contingent Consideration Agreements
Fair value at September 30, 2018
 
$
680

Settlements
 
 
(295
)
Net adjustments to fair value
 
 
(277
)
Fair value at June 30, 2019
 
$
108