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Note 5 - Loans and Allowance for Credit Losses (Detail) - Impaired loans, supplemental schedule (USD $)
In Thousands
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2011
Average Recored Investment$ 64,692$ 80,419
Recognized Interest Income6882,116
Commercial [Member]
  
Average Recored Investment10,95016,664
Recognized Interest Income39548
Commercial Real Estate Loans [Member]
  
Average Recored Investment33,97839,098
Recognized Interest Income5201,249
Construction [Member]
  
Average Recored Investment17,06521,839
Recognized Interest Income122295
Residential Real Estate Loans [Member]
  
Average Recored Investment225374
Consumer Installment And Other [Member]
  
Average Recored Investment2,4742,444
Recognized Interest Income$ 7$ 24