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Note 5 - Revenue From Contracts With Customers - Sources of Noninterest Income (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Investment securities (losses) gains, net [1] $ 0 $ (9)
Gain on sale of mortgage loans, net [1] 95 154
Income from company-owned life insurance [1] 293 235
Other 20 122
Total noninterest income 5,201 5,251
Overdraft Fees [Member]    
Service charges, commissions, fees, and trust income 956 927
Dormant Account Fees [Member]    
Service charges, commissions, fees, and trust income 593 665
Service Charges on Checking and Savings Accounts [Member]    
Service charges, commissions, fees, and trust income 314 310
Other Service Charges and Fees on Deposits [Member]    
Service charges, commissions, fees, and trust income 49 56
Allotment Processing Fees [Member]    
Service charges, commissions, fees, and trust income 720 715
Interchange Fees [Member]    
Service charges, commissions, fees, and trust income 827 781
Other Service Charges, Commissions, and Fees, Other [Member]    
Service charges, commissions, fees, and trust income [2] 545 591
Fiduciary and Trust [Member]    
Service charges, commissions, fees, and trust income $ 789 $ 704
[1] Not within the scope of ASC Topic 606.
[2] Includes broker, ATM, and other fees totaling $402 thousand and $457 thousand for the three months ended March 31, 2018 and 2017, respectively, which is within the scope of ASC Topic 606.