Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Numerator:
Net income	$ 16,666	$ 16,662	$ 52,194	$ 65,050
Denominator:
Weighted-average shares outstanding (in shares)	48,445	48,047	48,243	47,737
Effect of dilutive securities (in shares)	3,473	4,191	3,336	3,900
Weighted-average diluted shares (in shares)	51,918	52,238	51,579	51,637
Basic net income per share (in dollars per share)	$ 0.34	$ 0.35	$ 1.08	$ 1.36
Diluted net income per share (in dollars per share)	$ 0.32	$ 0.32	$ 1.01	$ 1.26
Employee stock options and restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive outstanding equity awards (in shares)	1,675	1,287	1,594	1,235