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Contingencies And Guarantees (Details Textuals) (USD $)
In Millions, unless otherwise specified
6 Months Ended 1 Months Ended
Jun. 30, 2011
Jun. 20, 2011
Dec. 31, 2010
Overdraft Litigation [Member]
May 31, 2006
Schneider Litigation [Member]
Jun. 30, 2011
Schneider Litigation [Member]
Jun. 20, 2011
Schneider Litigation [Member]
Contingencies and Guarantees (Textuals) [Abstract]            
Probable and estimable loss contingencies   $ 0.6       $ 9.9
Accrued liability recognized         0.6  
Allowance for unfunded lending commitments 5.8          
Short-term guarantees 77.3          
Percentage of recourse arrangement 100.00%          
Allowance for loan loss associated with loans sold with recourse $ 2.1          
No of lawsuits filed     2 2