Statements of Operations-Additional Information (Detail Textuals) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2018	Jun. 30, 2018
Statements Of Operations Additional Information [Line Items]
Deferred revenue	$ 6,416	$ 4,530
Current deferred revenue, included in accrued expense and other current liabilities	$ 1,471	$ 508
Customer
Statements Of Operations Additional Information [Line Items]
Average worldwide collection period for accounts receivable	60 days
Customer | Maximum
Statements Of Operations Additional Information [Line Items]
Payment term	120 days
Customer | Minimum
Statements Of Operations Additional Information [Line Items]
Payment term	30 days