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Income Taxes Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |
Income before income tax expense | $ 7,418 | $ 6,503 | $ 5,977 | $ 4,601 | $ 2,536 | $ 6,765 | $ 3,867 | $ 4,486 | $ 24,499 | $ 17,654
Income tax reconciliation, tax expense at statutory federal rate of 21% applied to income before income tax expense, respectively |  |  |  |  |  |  |  |  | 5,145 | 3,707
Income tax reconciliation, state income tax, net of federal effect |  |  |  |  |  |  |  |  | 1,321 | 803
Income tax reconciliation, tax exempt security and loan income, net of TEFRA adjustments |  |  |  |  |  |  |  |  | (635) | (847)
Income tax reconciliation, bank-owned life insurance |  |  |  |  |  |  |  |  | (252) | (250)
Income tax reconciliation, tax credits, net |  |  |  |  |  |  |  |  | (4,503) | (2,157)
Income tax reconciliation, other adjustments |  |  |  |  |  |  |  |  | 99 | 95
Total income tax expense | $ 1,650 | $ 1,418 | $ (595) | $ (1,298) | $ (1,528) | $ 1,464 | $ 578 | $ 837 | $ 1,175 | $ 1,351
Effective tax rate |  |  |  |  |  |  |  |  | 4.80% | 7.65%

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