v3.26.1
Income Taxes
 3 Months Ended
Mar. 31, 2026
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
Three months ended March 31,
(in thousands)20262025
Income before income taxes
$33,892 $3,213 
Income tax provision (benefit)
4,560 (2,118)
Effective tax rate13.5 %(65.9)%

The difference between the 13.5% effective tax rate and the U.S. federal statutory rate of 21.0% for the three months ended March 31, 2026, is primarily attributable to nontaxable clean fuel production credits offset by state and local income taxes and nondeductible compensation.

The difference between the (65.9)% effective tax rate and the U.S. federal statutory tax rate of 21.0% for the three months ended March 31, 2025, was primarily attributable to a discrete adjustment of unrecognized tax benefits related to prior period U.S. federal research and development tax credits.