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Stockholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | Sep. 30, 2012
Stockholders' Equity [Abstract] |  |  |  |  |
Number of shares authorized to be repurchased |  |  |  |  | 350,000
Additional shares authorized to be awarded |  |  | 350,000 |  |
Stock-based compensation expense | $ 468 | $ 306 | $ 783 | $ 552 |
Shares |  |  |  |  |
Balance September 30, 2012 |  |  | 23,235 |  |
Purchased |  |  | 75,448 |  |
Issued to Directors |  |  | (19,516) |  |
Balance June 30, 2013 | 79,167 |  | 79,167 |  |
Cost |  |  |  |  |
Balance September 30, 2012 |  |  | 543 |  |
Purchased |  |  | 2,876 |  |
Issued to Directors |  |  | (453) |  |
Balance June 30, 2013 | $ 2,966 |  | $ 2,966 |  |
Number of shares repurchased under plan | 165,056 |  | 165,056 |  |
Remaining number of shares available for repurchase | 184,944 |  | 184,944 |  |

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