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Stock-Based Compensation Plan (Tables) | 6 Months Ended
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Jun. 30, 2012
Stock-Based Compensation Plan [Abstract] |
Restricted Stock Activity |
| Six Months Ended June 30,
| 2012 | 2011
| Shares | Weighted Average Grant Date Fair Value | Shares | Weighted Average Grant Date Fair Value
Nonvested, beginning of period | 13,700 |  | $ | 16.11 | 12,772 |  | $ | 16.89
Granted | 14,500 |  |  | 17.87 | 12,300 |  |  | 16.76
Vested | (7,363 | ) |  | 16.10 | (5,691 | ) |  | 17.26
Forfeited | (737 | ) |  | 16.25 | (2,081 | ) |  | 18.38
Nonvested, end of period | 20,100 |  | $ | 17.37 | 17,300 |  | $ | 16.50

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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