Shareholders' Equity And Share-Based Compensation (Schedule Of Fair Value Of Each Option Award Estimated On The Date Of Grant Using The Black-Scholes Option Valuation Model) (Detail) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Expected volatility minimum	48.80%	60.40%	59.90%
Expected volatility maximum	66.20%	73.20%	79.00%
Weighted-average volatility	59.10%	68.80%	68.90%
Expected annual dividend	$ 0.30	$ 0.10	$ 0.00
Risk-free rate minimum	0.20%	0.50%	0.61%
Risk-free rate maximum	1.00%	1.70%	2.19%
Minimum [Member]
Expected term (in years)maximum	1 year 8 months 12 days	1 year 8 months 16 days	1 year 10 months 10 days
Maximum [Member]
Expected term (in years)maximum	5 years 6 months 15 days	3 years 9 months 18 days	3 years 11 months 23 days