Recent Accounting Pronouncements (Narrative) (Detail) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Mar. 31, 2018		Mar. 31, 2017	Mar. 31, 2018		Mar. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Income tax provision	$ 4,948	[1]	$ 2,924	$ 19,997	[1]	$ 4,949
ASU 2016-09 Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Income tax provision	$ 420			$ 1,521
Effect on financial statements				Yes

[1] (as restated)