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Fair Value of Assets and Liabilities (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
Premises and Equipment	$ 103,550,000	$ 108,170,000
Branch premises
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
Premises and Equipment	88,247,000	91,133,000
Impairment charge	600,000
Level 2 \| Branch premises
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
Impairment charge	600,000
Level 2 \| Carrying value \| Branch premises
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
Premises and Equipment	1,000,000
Level 2 \| Fair value \| Branch premises
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
Premises and Equipment	$ 400,000

The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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- Definition

Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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