Significant Accounting Policies (Details 6) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2013 item		Jun. 30, 2012		Jun. 30, 2011
Concentration of Credit Risk
Maturity period of marketable securities, maximum minimum period									1 month
Maturity period of marketable securities, maximum									19 months
Number of customer receivables balance representing a concentration									1
Net (Loss) Income per Common Share
Net (loss) income	$ 20,399	$ 10,513	$ 9,937	$ 4,413	$ (5,388)	$ (520)	$ 3,836	$ (11,736)	$ 45,262	[1]	$ (13,808)	[1]	$ 10,257	[1]
Weighted average shares outstanding (in shares)	93,680	93,730	93,512	93,428	93,563	93,583	93,902	94,065	93,586		93,780		93,488
Dilutive impact from:
Share-based payment awards (in shares)									1,824		0		2,313
Warrants (in shares)									0		0		52
Dilutive weighted average shares outstanding (in shares)	95,257	95,400	95,463	95,670	93,563	93,583	96,267	94,065	95,410		93,780		95,853
Net income (loss) per common share:
Basic (in dollars per share)	$ 0.22	$ 0.11	$ 0.11	$ 0.05	$ (0.06)	$ (0.01)	$ 0.04	$ (0.12)	$ 0.48		$ (0.15)		$ 0.11
Diluted (in dollars per share)	$ 0.21	$ 0.11	$ 0.10	$ 0.05	$ (0.06)	$ (0.01)	$ 0.04	$ (0.12)	$ 0.47		$ (0.15)		$ 0.11
Anti-dilutive Securities Excluded from Computation of (Loss) Income per Share
Employee equity awards (in shares)									443		6,554		1,728
Accounts and installments receivable | Customers concentration risk
Concentration of Credit Risk
Percentage of total receivables									11.00%

[1] Our provision for income taxes provided a net benefit of $54.0 million in fiscal 2011, due to the reversal of a significant portion of our U.S. valuation allowance in the fourth quarter of fiscal 2011. See Note 8 to our Consolidated Financial Statements, "Income Taxes," for further information.