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Stock-Based Compensation (Tables) | 12 Months Ended
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Sep. 30, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Schedule of Restricted Stock Units Activity | Total RSU activity (number of shares) for the past three years is summarized below:
| Number of |  |  | Weighted |
| Restricted |  |  | Average |
| Stock |  |  | Fair Value |
| Units |  |  | Per Share |
Outstanding at September 30, 2012 |  | 99,725 |  |  | $ | 32.69 |
Granted |  | 58,775 |  |  |  | 39.05 |
Vested |  | (66,383 | ) |  |  | 34.00 |
Forfeited |  | (10,562 | ) |  |  | 33.46 |
Outstanding at September 30, 2013 |  | 81,555 |  |  | $ | 38.66 |
Granted |  | 57,200 |  |  |  | 66.15 |
Vested |  | (29,832 | ) |  |  | 44.88 |
Forfeited |  | (2,078 | ) |  |  | 56.34 |
Outstanding at September 30, 2014 |  | 106,845 |  |  | $ | 51.30 |
Granted |  | 89,500 |  |  |  | 41.75 |
Vested |  | (55,431 | ) |  |  | 45.23 |
Forfeited |  | (7,408 | ) |  |  | — |
Outstanding at September 30, 2015 |  | 133,506 |  |  | $ | 50.26 |

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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