XML 46 R24.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Shareholders' Equity (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2012
Shareholders' Equity |
Summary of shares granted and vested |
|  | 2012 |  | 2011 |  | 2010 |
--- | --- | --- | --- | --- | --- | --- | ---
|  | Number of Shares |  | Weighted Average Grant Date Fair Value |  | Number of Shares |  | Weighted Average Grant Date Fair Value |  | Number of Shares |  | Weighted Average Grant Date Fair Value |
Unvested shares, beginning of year |  |  | 114,110 |  | $ | 22.70 |  |  | 93,432 |  | $ | 22.31 |  |  | 74,062 |  | $ | 23.20 |
Shares granted |  |  | 84,017 |  |  | 25.09 |  |  | 77,300 |  |  | 24.20 |  |  | 63,900 |  |  | 22.89 |
Shares vested |  |  | (70,473 | ) |  | 24.38 |  |  | (56,622 | ) |  | 23.76 |  |  | (44,530 | ) |  | 22.63 |
Unvested shares, end of year |  |  | 127,654 |  |  | 24.88 |  |  | 114,110 |  |  | 22.70 |  |  | 93,432 |  |  | 22.31 |

X
- Definition Tabular disclosure of the changes in outstanding nonvested shares. + 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
Name: | us-gaap_ScheduleOfNonvestedShareActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StockholdersEquityNoteAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration