(Loss) Income Per Share (Schedule Of Earnings Per Share, Basic And Diluted) (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
(Loss) Income Per Share [Abstract]
Net (loss) income	$ (1,273)	$ 2,191	$ 45,720	$ 53,794
Weighted average shares outstanding	29,607	29,116	29,658	29,017
Net (loss) income per basic share	$ (0.04)	$ 0.08	$ 1.54	$ 1.85
Potential common shares - treasury method		953	840	980
Weighted average shares and potential dilutive common shares	29,607	30,069	30,498	29,997
Net (loss) income per diluted share	$ (0.04)	$ 0.07	$ 1.50	$ 1.79