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Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2013
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial $ 44,264 $ 32,646 $ 42,980
Commercial Loan [Member] | Fair Value, Inputs, Level 2 [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 5,608 4,367  
Commercial Loan [Member] | Fair Value, Inputs, Level 3 [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 8,228 1,089  
Commercial Loan [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 17,646 6,779 7,993
Commercial Loan [Member] | Estimate of Fair Value Measurement [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 13,836 5,456  
Commercial Real Estate Investment [Member] | Fair Value, Inputs, Level 2 [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 134 2,806  
Commercial Real Estate Investment [Member] | Fair Value, Inputs, Level 3 [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 4,774 1,998  
Commercial Real Estate Investment [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 5,641 5,902 5,407
Commercial Real Estate Investment [Member] | Estimate of Fair Value Measurement [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 4,908 4,804  
Commercial Real Estate Owner Occupied [Member] | Fair Value, Inputs, Level 2 [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 4,327 2,712  
Commercial Real Estate Owner Occupied [Member] | Fair Value, Inputs, Level 3 [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 1,891 887  
Commercial Real Estate Owner Occupied [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 7,323 5,452 6,449
Commercial Real Estate Owner Occupied [Member] | Estimate of Fair Value Measurement [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 6,218 3,599  
Residential Mortgage [Member] | Fair Value, Inputs, Level 2 [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 113 86  
Residential Mortgage [Member] | Fair Value, Inputs, Level 3 [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 628 774  
Residential Mortgage [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 771 887 691
Residential Mortgage [Member] | Estimate of Fair Value Measurement [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 741 860  
Home Equity Line of Credit [Member] | Fair Value, Inputs, Level 2 [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 125 50  
Home Equity Line of Credit [Member] | Fair Value, Inputs, Level 3 [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 95 47  
Home Equity Line of Credit [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 598 623 481
Home Equity Line of Credit [Member] | Estimate of Fair Value Measurement [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 220 97  
Consumer, Other [Member] | Fair Value, Inputs, Level 3 [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 2 2  
Consumer, Other [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 60 70  
Consumer, Other [Member] | Estimate of Fair Value Measurement [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 2 2  
Construction Loans [Member] | Fair Value, Inputs, Level 2 [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 879 4,228  
Construction Loans [Member] | Fair Value, Inputs, Level 3 [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 9,572 7,080  
Construction Loans [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 12,225 12,933 21,959
Fair Value, Inputs, Level 2 [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Other real estate owned 8,809 9,225  
Total assets measured at fair value on a nonrecurring basis 19,995 23,474  
Fair Value, Inputs, Level 3 [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Total assets measured at fair value on a nonrecurring basis 25,190 11,877  
Estimate of Fair Value Measurement [Member] | Construction Loans [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Commercial 10,451 11,308  
Estimate of Fair Value Measurement [Member]
      
Note 8 - Fair Value Measurements (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]      
Other real estate owned 8,809 9,225  
Total assets measured at fair value on a nonrecurring basis $ 45,185 $ 35,351