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Goodwill and Other Intangible Assets, Net - Overview (Details)
$ in Thousands
6 Months Ended
Mar. 31, 2020
USD ($)
Goodwill and Other Intangible Assets, Net  
Goodwill impairment loss $ 0
Change to goodwill $ 0
Customer relationships  
Goodwill and Other Intangible Assets, Net  
Useful life 16 years