The Company - Schedule of Changes in Contract Assets and Contract Liabilities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Contract with Customer Asset and Liability [Line Items]
Receivables, beginning of year		$ 82
Net change	2,605	(82)
Receivables, end of year	2,605
Contract assets, beginning of year	686	312
Net change	(82)	374
Contract assets, end of year	604	686	$ 312
Contract liabilities, beginning of year	7,774	788
Net change	74,726	6,986	(208)
Contract liabilities, end of year	$ 82,500	$ 7,774	$ 788