Income Taxes (Narrative) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Line Items]
Federal statutory tax rate	28.10%	35.00%	35.00%
Deferred tax assets valuation allowance	$ 77,416	$ 773
Net change in total valuation allowance	76,643	(21)
Federal net operating loss carryforwards	32,515
State net operating loss carryforwards expire in 12-20 years	9,047
Tax Cuts and Jobs Act, net tax expense (benefit)	13,739
Income tax expense due to remeasurement of deferred tax assets	5,075
Tax Cuts and Jobs Act one-time transition tax expense	6,219
Deferred tax liabilities, undistributed foreign earnings	$ 2,495	$ 65
Earliest Tax Year
Income Tax Disclosure [Line Items]
Federal statutory tax rate	35.00%
Latest Tax Year
Income Tax Disclosure [Line Items]
Federal statutory tax rate	21.00%
Local tax authorities
Income Tax Disclosure [Line Items]
Deferred tax liabilities, undistributed foreign earnings	$ 2,445
U.S.
Income Tax Disclosure [Line Items]
Deferred tax assets valuation allowance	76,500
Foreign
Income Tax Disclosure [Line Items]
Foreign net operating loss carryforwards	$ 18,896