Basic and Diluted Weighted Average Shares Outstanding (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2	654	25	740
Basic weighted-average shares outstanding	33,120	32,052	33,047	31,880
Effect of dilutive equity instruments	711	634	772	840
Diluted weighted-average shares outstanding	33,831	32,686	33,819	32,720