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Share Repurchase Program (Narrative) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Sep. 30, 2015 | Dec. 17, 2014
Equity Class Of Treasury Stock [Line Items] |  |
Stock repurchase program expiration date | Dec. 31, 2015 |
Stock purchased under repurchase program | 670,181 |
Stock purchased under repurchase program, value | $ 21,259,000 |
Stock purchased under repurchased program, average purchase price per share | $ 31.72 |
Maximum |  |
Equity Class Of Treasury Stock [Line Items] |  |
Stock repurchase program, authorized amount |  | $ 25,000,000

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