Share-Based Compensation (Schedule Of Stock Options Awarded Under The Option Plans) (Details) (USD $)	3 Months Ended
	Dec. 31, 2011 years
Share-Based Compensation [Abstract]
Stock options Outstanding at October 1, 2011, Shares	435,054
Stock options Exercised, Shares	(2,500)
Stock options Cancelled / Expired, Shares	(198,982)
Stock options Outstanding at December 31, 2011, Shares	233,572
Stock options Exercisable at December 31, 2011, Shares	231,904
Stock options Outstanding at October 1, 2011, Weighted Avg. Price	$ 35.58
Stock options Exercised, Weighted Avg. Price	$ 14.77
Stock options Cancelled / Expired, Weighted Avg. Price	$ 45.35
Stock options Outstanding at December 31, 2011, Weighted Avg. Price	$ 27.49
Stock options Exercisable at December 31, 2011, Weighted Avg. Price	$ 27.45
Stock options Outstanding at December 31, 2011, Aggregate Intrinsic Value	$ 1.4
Stock options Exercisable at December 31, 2011, Aggregate Intrinsic Value	$ 1.4
Stock options Outstanding at December 31, 2011, Weighted Avg. Remaining Contractual Life, Years	1.2