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Income Taxes
 3 Months Ended
Mar. 31, 2024
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
The Company computes its provision for income taxes by applying the estimated annual effective tax rate to pretax income or loss and adjusts the provision for discrete tax items recorded in the period. The income tax expense, effective tax rates, and statutory federal income tax rates for the three months ended March 31, 2024 and 2023 were as follows (in thousands, except percentages):

Three Months Ended
March 31,
20242023
Income tax expense
$3,122 $3,630 
Effective tax rate(92.3)%42.0 %
Statutory federal income tax rate21 %21 %
The effective tax rate of (92.3)% for the three months ended March 31, 2024 differed from the U.S. federal statutory tax rate of 21% primarily due to state taxes, tax detriments relating to the settlement of RSUs, certain non-deductible expenses including limitations on the amount of deductible officer compensation, and net tax benefits from research and development tax credits. The effective tax rate of 42.0% for the three months ended March 31, 2023 differed from the U.S. federal statutory tax rate of 21% primarily due to tax detriments relating to the settlement of RSUs, certain non-deductible expenses, including limitations on the amount of deductible officer compensation, and net tax benefits from research and development tax credits.
During the three months ended March 31, 2024, the Company continued to record reserves for the current year uncertain tax positions recognized within the effective tax rate. The Company believes that any change to the unrecognized tax benefits in the next 12 months will not be material to the condensed consolidated financial statements.