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Schedule of Noninterest Income Disaggregated by Major Source (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on the sale and disposal of bank premises and equipment (1) |  |  |  |  |  |  |  |  |  | $ 5 | $ 137
Gain (loss) on sale of securities |  |  |  |  |  |  |  |  |  | 687 | (7)
Bank owned life insurance income |  |  |  |  |  |  |  |  |  | 310 | (48)
Other operating income | [1] |  |  |  |  |  |  |  |  | 502 | 217
Total noninterest income |  | $ 2,251 | $ 2,216 | $ 2,422 | $ 1,690 | $ 1,818 | $ 2,219 | $ 1,878 | $ 1,844 | 8,579 | 7,759
Trust asset management fees |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Noninterest income |  |  |  |  |  |  |  |  |  | 1,398 | 1,380
Overdrawn account fees |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Noninterest income |  |  |  |  |  |  |  |  |  | 695 | 961
Monthly and other service charges |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Noninterest income |  |  |  |  |  |  |  |  |  | 225 | 226
Interchange fees |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Noninterest income | [2] |  |  |  |  |  |  |  |  | 372 | 380
ATM fees |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Noninterest income | [2] |  |  |  |  |  |  |  |  | 2,578 | 2,431
Brokerage commissions |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Noninterest income | [2] |  |  |  |  |  |  |  |  | 916 | 1,150
Secondary market fees |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Noninterest income |  |  |  |  |  |  |  |  |  | 431 | 486
Other charges and fees |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Noninterest income | [3] |  |  |  |  |  |  |  |  | $ 460 | $ 446
[1] | Includes income within the scope of Topic 606 of $505 thousand and $212 thousand for the years ended December 31, 2020 and 2019, respectively. The remaining balance is outside the scope of Topic 606.
[2] | Income within the scope of Topic 606.
[3] | Includes income within the scope of Topic 606 of $390 thousand and $412 thousand for the years ended December 31, 2020 and 2019, respectively. The remaining balance is outside the scope of Topic 606.

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