Stock Repurchase Program (Narrative) (Details) - shares	12 Months Ended
	Sep. 30, 2016	Jan. 17, 2007
Equity, Class of Treasury Stock [Line Items]
Number of shares authorized to be repurchased		1,000,000
Stock repurchased during period, shares	2,183,704
Maximum repurchases allowed under provision through calendar year	450,000
Maximum repurchases allowed under provision annually per individual	50,000
Maximum [Member]
Equity, Class of Treasury Stock [Line Items]
Number of shares authorized to be repurchased	3,000,000