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Goodwill and Intangible Assets - Schedule of Goodwill (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2019
Jun. 30, 2019
Changes in the carrying amount of goodwill    
Balance at the beginning of the period $ 57,770 $ 57,855
Currency translation (113) (85)
Balance at the end of the period $ 57,657 $ 57,770