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Note 14 - Income Taxes - Reconciliation of Statutory Federal Tax Rate and Effective Tax Rate From Continuing Operations (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Federal income tax at the statutory rate, amount |  |  |  |  |  |  |  |  | $ 13,971 | $ 9,683 | $ 10,457
Federal income tax at the statutory rate |  |  |  |  |  |  |  |  | 21.00% | 21.00% | 21.00%
State income tax, net of federal benefit, amount |  |  |  |  |  |  |  |  | $ 2,076 | $ 1,109 | $ 1,220
State income tax, net of federal benefit |  |  |  |  |  |  |  |  | 3.12% | 3.12% | 3.12%
Total effective income tax rate reconciliation, amount |  |  |  |  |  |  |  |  | $ 16,047 | $ 10,792 | $ 11,677
Total effective income tax rate reconciliation |  |  |  |  |  |  |  |  | 24.12% | 24.12% | 24.12%
Tax-exempt interest income, amount |  |  |  |  |  |  |  |  | $ (340) | $ (500) | $ (637)
Tax-exempt interest income |  |  |  |  |  |  |  |  | (0.51%) | (1.08%) | (1.28%)
Excess tax benefits |  |  |  |  |  |  |  |  | $ (133) | $ 42 | $ (71)
Excess tax benefits |  |  |  |  |  |  |  |  | (0.20%) | 0.09% | (0.14%)
Bank owned life insurance, amount |  |  |  |  |  |  |  |  | $ (225) | $ (139) | $ (249)
Bank owned life insurance |  |  |  |  |  |  |  |  | (0.34%) | (0.30%) | (0.50%)
Other items, net, amount |  |  |  |  |  |  |  |  | $ 11 | $ (9) | $ 274
Other items, net |  |  |  |  |  |  |  |  | 0.02% | (0.74%) | 0.04%
Total income tax expense | $ 3,037 | $ 3,816 | $ 4,077 | $ 4,430 | $ 3,389 | $ 2,332 | $ 2,270 | $ 2,195 | $ 15,360 | $ 10,186 | $ 10,994
Income tax at the effective tax rate |  |  |  |  |  |  |  |  | 23.09% | 22.09% | 22.24%

X
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to domestic, state, and local income taxes. + References No definition available. + Details
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income (loss) exempt from income taxes. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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