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Selected Consolidated Financial Statement Information - Accounts Receivable (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Jun. 30, 2017
Accounts Receivable    
Accounts receivable $ 28,273 $ 29,336
Less: Allowance for doubtful accounts (957) (864)
Accounts receivable, net $ 27,316 $ 28,472