Net Income (Loss) Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Net Income (Loss) Per Share
Net income	$ 20,843	$ 10,513	$ 59,105	$ 24,863
Weighted average shares outstanding (in shares)	92,414	93,730	92,891	93,556
Dilutive impact from:
Share-based payment awards (in shares)	951	1,670	1,060	1,919
Dilutive weighted average shares outstanding (in shares)	93,365	95,400	93,951	95,475
Income per share
Basic (in dollars per share)	$ 0.23	$ 0.11	$ 0.64	$ 0.27
Dilutive (in dollars per share)	$ 0.22	$ 0.11	$ 0.63	$ 0.26
Employee Equity Awards
Antidilutive Securities Excluded from Computation of Earnings Per Share
Employee equity awards (in shares)	61	438	325	947