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Income Taxes
9 Months Ended
Sep. 30, 2023
Income Tax Disclosure [Abstract]  
Income Taxes

9. Income Taxes

The effective income tax rates were 23.8% and 23.7% for the three months ended September 30, 2023 and 2022, respectively. The effective income tax rates were 23.3% and 25.4% for the nine months ended September 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.