Summary of Significant Accounting Policies (Number Of Shares Used In Calculation Of Earnings Per Share) (Details) - shares	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Weighted Average Shares Outstanding - Basic	25,774	25,762	26,077
Performance- Accelerated Restricted Stock	221	206	188
Shares — Diluted	25,995	25,968	26,265