Fair Value Measurements (Schedule Of Reconciliation Of Items Measured At Fair Value On A Recurring Basis That Used Significant Unobservable Inputs (Level 3)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	$ 4,750	$ 13,010
Total (losses) gains realized or unrealized: Included in other comprehensive income	(14)	1,740
Settlements	(1,700)	(10,000)
Balance, end of period	3,036	4,750
Unrealized (losses) gains attributable to assets still held as of the end of the period	$ (14)	$ 112