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Selected Consolidated Financial Statement Information - Accounts Receivable (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Jun. 30, 2019
Accounts Receivable    
Accounts receivable $ 35,297 $ 36,628
Less: Allowance for doubtful accounts (673) (613)
Accounts receivable, net $ 34,624 $ 36,015