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Goodwill and Intangible Assets - Changes in Goodwill (Details)
$ in Thousands
3 Months Ended
Dec. 31, 2019
USD ($)
Goodwill [Roll Forward]  
Balance at September 30, 2019 $ 32,636
Foreign currency effect on goodwill and other 792
Balance at December 31, 2019 34,234
A2iA  
Goodwill [Roll Forward]  
Other adjustments $ 806