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Income Taxes (Schedule of Reconciliation of Statutory Federal Income Tax Rate and Effective Tax Rate for Continuing Operations) (Detail)
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Income Tax Disclosure [Abstract]      
Federal statutory tax rate 28.10% 35.00% 35.00%
State and local taxes, net of federal income tax benefit 2.00% 1.20% 1.70%
Change in valuation allowance (26.20%) 0.10% 0.00%
Foreign withholding taxes (0.80%) 0.00% 0.00%
Foreign tax rate differential (0.00%) (1.80%) (0.40%)
Rate differential between fiscal year 2018 statutory rate and enacted rate for subsequent period (6.00%) 0.00% 0.00%
Revaluation of the deferred tax asset and liabilities due to the tax law change (1.80%) 0.00% 0.00%
Transition tax (2.10%) 0.00% 0.00%
Other (1.20%) 0.00% (0.90%)
Effective tax rate (8.00%) 34.50% 35.40%