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Nature of Banking Activities and Significant Accounting Policies (Components Of Accumulated Other Comprehensive Income, Net Of Deferred Taxes) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Unrealized Gain (Loss) on Securities, Balance at end of year $ 3,822 $ 3,262 $ 1,545
Change in Market Value of Interest Rate Swap, Balance at end of year (418) (382) (111)
Defined Benefit Pension Plan, Balance at end of year     (287)
Post Retirement Benefit Plan, Balance at end of year 44 51 63
Total accumulated other comprehensive income 3,448 2,931 1,210
Unrealized Gain (Loss) on Securities, Change 560 1,717 116
Change in Market Value of Interest Rate Swap, Change (36) (271) (273)
Defined Benefit Pension Plan, Change   287  
Post Retirement Benefit Plan, Change (7) (12)  
Total other comprehensive income 517 1,721 118
Parent Company [Member]
      
Total accumulated other comprehensive income $ 3,448 $ 2,931