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Securities (Narrative) (Details) (USD $)	12 Months Ended
Securities (Narrative) (Details) (USD $)	Dec. 31, 2011 security	Jun. 30, 2012 security
U.S. Government and Government-Sponsored Enterprise Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In Unrealized Loss Position		2
Number Of Securities In Continuous Loss Position For Twelve Months or More		5
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In Continuous Loss Position For Twelve Months or More		1
Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In Unrealized Loss Position		9
Number Of Securities In Continuous Loss Position For Twelve Months or More		0
Number Of Securities Held With Adverse Credit Ratings		0
Number Of Other Than Temporarily Impaired Securities	1
Available-for-sale Securities, Par Value	$ 3,000,000
Available-for-sale Securities, Present Value Of Expected Future Cash Flows	0
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities	$ 3,000,000
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In Unrealized Loss Position		23

The amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.

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