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Goodwill and Other Intangible Assets - Carrying Amount of Goodwill (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Goodwill [Roll Forward]    
Goodwill, Beginning Balance $ 32,230 $ 12,692
Addition related to the acquisition 19,525 19,791
Effect of foreign currency changes on goodwill (351) (253)
Goodwill, Ending Balance $ 51,404 $ 32,230