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Income Taxes (Tables)
6 Months Ended
Jun. 30, 2023
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense (Benefit)
The provision (benefit) for income taxes consists of the following:
 Three Months EndedSix Months Ended
 June 30,
2023
June 30,
2022
June 30,
2023
June 30,
2022
 (in thousands)
Current$13,037 $5,277 $18,472 $9,086 
Deferred(5,359)(1,100)(4,438)(127)
     Income tax provision$7,678 $4,177 $14,034 $8,959 
Schedule of Effective Income Tax Rate Reconciliation
The reconciliation of the Federal statutory income tax rate to the effective income tax rate is as follows:

 Three Months EndedSix Months Ended
 June 30,
2023
June 30,
2022
June 30,
2023
June 30,
2022
Federal statutory rate21.0 %21.0 %21.0 %21.0 %
State income taxes, net of Federal benefit4.6 6.3 4.4 4.5 
Excess tax benefits related to share-based compensation (Note 12)
(3.8)(1.0)(6.0)(1.7)
Return to provision— (1.2)(0.1)(0.6)
Research and development credits(1.2)(1.5)(1.3)(1.2)
Change in valuation allowance (Oklahoma Investment Credit)(5.8)— (3.2)— 
Other(0.4)(2.8)(0.3)(1.1)
     Effective tax rate14.4 %20.8 %14.5 %20.9 %