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Note 7 - Loans and Allowance for Loan Losses (Details) - Allowance for Loan Losses and the Recorded Investment in Loans by Impairment Method - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Mar. 31, 2015
Dec. 31, 2014
Ending allowance balance attributable to loans:        
Allowance for loan losses individually evaluated for impairment $ 2,689 $ 2,894    
Allowance for loan losses collectively evaluated for impairment 7,139 7,421    
Total ending allowance balance 9,828 10,315 $ 12,606 $ 13,968
Loans        
Loans individually evaluated for impairment 39,964 37,182    
Loans collectively evaluated for impairment 922,325 922,093    
Total loans, net of unearned income 962,289 959,275    
Real Estate Portfolio Segment [Member]        
Ending allowance balance attributable to loans:        
Allowance for loan losses individually evaluated for impairment 2,316 2,515    
Allowance for loan losses collectively evaluated for impairment 6,393 6,658    
Total ending allowance balance 8,709 9,173 11,522 12,542
Loans        
Loans individually evaluated for impairment 39,391 36,625    
Loans collectively evaluated for impairment 823,524 820,411    
Total loans, net of unearned income 862,915 857,036    
Commercial Portfolio Segment [Member]        
Ending allowance balance attributable to loans:        
Allowance for loan losses individually evaluated for impairment 219 223    
Allowance for loan losses collectively evaluated for impairment 620 597    
Total ending allowance balance 839 820 866 1,153
Loans        
Loans individually evaluated for impairment 419 400    
Loans collectively evaluated for impairment 89,384 89,420    
Total loans, net of unearned income 89,803 89,820    
Consumer Portfolio Segment [Member]        
Ending allowance balance attributable to loans:        
Allowance for loan losses individually evaluated for impairment 154 156    
Allowance for loan losses collectively evaluated for impairment 126 166    
Total ending allowance balance 280 322 $ 218 $ 273
Loans        
Loans individually evaluated for impairment 154 157    
Loans collectively evaluated for impairment 9,417 12,262    
Total loans, net of unearned income $ 9,571 $ 12,419