Earnings Per Share (Computation Of Basic And Diluted EPS) (Details) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Numerator for basic and diluted earnings per share - net income (loss)	$ (6,348)	$ 1,508	$ (183,189)	$ (25,420)
Denominator for basic earnings per share-weighted-average shares outstanding	60,474	59,995	60,408	59,946
Effect of dilutive securities - shares issuable upon vesting of restricted stock	0	80	0	0
Denominator for diluted earnings per share - weighted-average shares outstanding after assumed vesting of restricted stock	60,474	60,075	60,408	59,946
Basic earnings (loss) per share	$ (0.10)	$ 0.03	$ (3.03)	$ (0.42)
Diluted earnings (loss) per share	$ (0.10)	$ 0.03	$ (3.03)	$ (0.42)
Stock Options [Member]
Anti-dilutive securities not considered in diluted EPS calculation	1,568	1,806	1,717	1,809
Restricted Stock [Member]
Anti-dilutive securities not considered in diluted EPS calculation	0	135	70	156
SARs [Member]
Anti-dilutive securities not considered in diluted EPS calculation	2,931	2,644	2,825	2,678
Weighted Average Shares Issuable Upon Conversion of Convertible Notes [Member]
Anti-dilutive securities not considered in diluted EPS calculation	0	0	0	234