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Statements of Operations - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended
Sep. 30, 2019
Jun. 30, 2019
Statements Of Operations Additional Information [Line Items]    
Deferred revenue $ 5,276 $ 5,464
Current deferred revenue, included in accrued expense and other current liabilities $ 1,002 $ 965
Customer [Member] | Maximum [Member]    
Statements Of Operations Additional Information [Line Items]    
Payment term 120 days  
Average worldwide collection period for accounts receivable 70 days  
Customer [Member] | Minimum [Member]    
Statements Of Operations Additional Information [Line Items]    
Payment term 30 days  
Average worldwide collection period for accounts receivable 60 days