Income Taxes (Schedule of Current and Non-Current Deferred Tax Assets (Liabilities)) (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Current deferred tax assets, net		$ 546
Non-current deferred tax assets, net		19,453
Non-current deferred tax liabilities	$ (1,536)	(7,325)
Net deferred tax assets (liabilities)	$ (1,536)	$ 12,674