Income Taxes - Income tax rate reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Effective income tax rate reconciliation, amount
Computed "expected" tax expense			$ 4,049	$ 2,990
Bank-owned life insurance			(40)	(43)
Tax-exempt interest income			(70)	(74)
State income taxes, net of federal benefit			180	121
Excess tax benefit on share-based compensation			(369)	(7)
Other, net			(26)	99
Total	$ 1,854	$ 1,672	$ 3,724	$ 3,086

Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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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.

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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 nondeductible life insurance expense.

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