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Income Taxes
6 Months Ended
Jun. 30, 2023
Income Tax Disclosure [Abstract]  
Income Taxes

8. Income Taxes

The effective income tax rates were 23.8% and 25.1% for the three months ended June 30, 2023 and 2022, respectively. The effective income tax rates were 23.0% and 26.3% for the six months ended June 30, 2023 and 2022, respectively. The difference between our federal statutory rate of 21% and our effective income tax rates is principally due to the inclusion of state taxes and non-deductible compensation, partially offset by the use of federal employment tax credits.