Balance Sheet Components - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2016
Balance Sheet Components [Line Items]
Depreciation expense	$ 1.3	$ 1.1	$ 1.5
Amortization expense related to internal software development costs	2.4	2.3	2.8
Partnership Agreement [Member]
Balance Sheet Components [Line Items]
Partnership agreement				10 years
Upfront cash payment				$ 10.0
Prepaid expenses and other assets	5.3	1.0
Other assets, noncurrent	0.0	5.3
Amortization expense	$ 1.0	$ 1.0	$ 1.0