Net Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Numerator:
Net income	$ 34,689	$ 31,242	$ 48,388	$ 52,105
Denominator:
Weighted-average shares outstanding (in shares)	47,651	46,131	47,584	45,802
Effect of dilutive securities (in shares)	3,838	4,960	3,821	4,765
Weighted-average diluted shares (in shares)	51,489	51,091	51,405	50,567
Basic net income per share (in dollars per share)	$ 0.73	$ 0.68	$ 1.02	$ 1.14
Diluted net income per share (in dollars per share)	$ 0.67	$ 0.61	$ 0.94	$ 1.03
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)	1,329	707	1,291	470