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Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) (USD $) | 12 Months Ended
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Dec. 31, 2011
Cash dividends on common stock, per share | $ 0.20
Issuance of common stock dividend reinvestment plan, shares | 6,748
Common Stock [Member] |
Issuance of common stock dividend reinvestment plan, shares | 6,748
Surplus [Member] |
Issuance of common stock dividend reinvestment plan, shares | 6,748
Retained Earnings [Member] |
Cash dividends on common stock, per share | $ 0.20

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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