Schedule II - Valuation and Qualifying Accounts (Detail) - Deferred Tax Valuation Allowance [Member] - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning of Period	$ 42,214	$ 40,303	$ 37,412
Additions, Charge (Benefit) to Expenses	7,564	1,911	2,891
End of Period	$ 49,778	$ 42,214	$ 40,303