Basic and Diluted Weighted Average Shares Outstanding (Detail) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	26	147	4	428
Basic weighted-average shares outstanding	33,251	32,298	33,052	32,001
Effect of dilutive equity instruments	740	935	778	952
Diluted weighted-average shares outstanding	33,991	33,233	33,830	32,953