Recent Accounting Pronouncements (Narrative) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Income tax provision (benefit)	$ 13,365	$ (370)	$ 15,049	$ 2,025
ASU 2016-09 Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Income tax provision (benefit)	$ (27)		$ 1,101
Effect on financial statements			Yes