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Consolidated Statements of Income (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Interest income
Interest and fees on loans (tax-exempt income)	$ 696,000	$ 868,000	$ 1,472,000
Interest and dividends on investments (tax-exempt income)	$ 4,332,000	$ 3,373,000	$ 2,980,000

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- Definition

Interest income and fees derived from loans which are exempt from federal income taxes.

+ References

No definition available.

+ Details

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- Definition

Interest income derived from securities which are exempt from federal income taxes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 2

-Article 9

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