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Business Combinations and Divestitures (Tables)
 12 Months Ended
Sep. 30, 2019
Business Combinations [Abstract]  
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]
Current assets
$
1,767

Property and equipment
590

Intangible assets (primarily customer relationships)
3,182

Goodwill
4,164

Current liabilities
(1,580
)
Long term liabilities
(14
)
Deferred tax liability
(696
)
Net assets acquired
$
7,413