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Note 9 - Revenue From Contracts With Customers - Noninterest Income (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Noninterest income, financial service $ 1,417 $ 1,240
Net gain (loss) on loans and investments (35) 192
Increase in cash value of life insurance 47 48
Other 27 25
Other noninterest income 39 265
Total noninterest income 1,456 1,505
Deposit Account [Member]    
Noninterest income, financial service 506 461
ATM and Debit Card Fees [Member]    
Noninterest income, financial service 765 647
Investment Advisory, Management and Administrative Service [Member]    
Noninterest income, financial service 113 98
Product and Service, Other [Member]    
Noninterest income, financial service $ 33 $ 34