Net Income (Loss) Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Net Income (Loss) Per Share
Net income (loss)	$ 10,513	$ (520)	$ 24,863	$ (8,420)
Weighted average shares outstanding (in shares)	93,730	93,583	93,556	93,851
Dilutive impact from:
Share-based payment awards (in shares)	1,670	0	1,919	0
Dilutive weighted average shares outstanding (in shares)	95,400	93,583	95,475	93,851
Income (loss) per share
Basic (in dollars per share)	$ 0.11	$ (0.01)	$ 0.27	$ (0.09)
Diluted (in dollars per share)	$ 0.11	$ (0.01)	$ 0.26	$ (0.09)
Employee Equity Awards
Antidilutive Securities Excluded from Computation of Earnings Per Share
Employee equity awards (in shares)	438	6,392	947	6,805

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