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Fair Value (Reconciliation Of The Level 3 Input For Financial Instruments Measured On A Recurring Basis) (Details) (USD $)
In Thousands
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Obligations Of States And Political Subdivisions [Member]
    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance, beginning $ 2,756$ 2,598$ 2,751
Total gains/(losses), Included in earnings - realized    
Total gains/(losses), Included in earnings - unrealized  (128) 
Total gains/(losses), Included in other comprehensive income 93 98
Total gains/(losses), Settlement  (2,470) 
Balance, ending 2,849 2,849
Equity Securities [Member]
    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance, beginning741 745 
Total gains/(losses), Included in earnings - realized    
Total gains/(losses), Included in earnings - unrealized    
Total gains/(losses), Included in other comprehensive income8 4 
Balance, ending749 749 
Fair Value Swap [Member]
    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance, beginning(200)(340)(60)(500)
Total gains/(losses), Included in earnings - realized    
Total gains/(losses), Included in earnings - unrealized    
Total gains/(losses), Settlement   160
Re-evaluation of fair value swap  (140) 
Balance, ending$ (200)$ (340)$ (200)$ (340)