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Revenue Recognition, Noninterest Income by Major Source (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Noninterest income    
Trust and estate $ 372 $ 361
Brokerage fees 41 57
Service charges on deposit accounts 444 485
Interchange fee income, net 285 286
Bank-owned life insurance 89 89
Other service charges, commissions and other income 91 133
Gain on call of securities available for sale 535  
Gain on sale of mortgage loans held for sale, net 6  
Total noninterest income $ 1,863 $ 1,411