Schedule II - Valuation and Qualifying Accounts Allowances for Doubtful Accounts (Detail) - Allowance for Doubtful Accounts - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 824	$ 996	$ 923
(Charged to Revenue, Costs and Expenses)	749	220	238
Additions and Recoveries	2	1	2
Deductions	(239)	(393)	(167)
Balance at End of Year	$ 1,336	$ 824	$ 996