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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2024
Income Tax Disclosure [Abstract]  
Schedule of Income before Income Tax, Domestic and Foreign
Years Ended December 31,
 202420232022
Income before taxes
   
U.S.
$45,497 $69,055 $225,640 
Non-U.S.
78 168 151 
 $45,575 $69,223 $225,791 
Schedule of Components of Income Tax Expense (Benefit)
Income tax expense (benefit) consists of:
 Years Ended December 31,
 202420232022
Current Provision (benefit):
   
Federal
$7,525 $20,707 $31,165 
State
2,865 3,159 6,463 
Non-U.S.
23 47 48 
Total current provision (benefit)$10,413 $23,913 $37,676 
Deferred Provision (benefit):
   
Federal
$(8,192)$(8,886)$13,874 
State
(795)(427)2,355 
Non-U.S.
— — — 
Total deferred provision (benefit)(8,987)(9,313)16,229 
Total income tax expense (benefit)$1,426 $14,600 $53,905 
Schedule of Effective Income Tax Rate Reconciliation
The U.S. federal statutory income tax rate is reconciled to the effective income tax rate as follows:
 Years Ended December 31,
 202420232022
U.S. federal statutory income tax rate
21.0 %21.0 %21.0 %
U.S. state income taxes
3.4 %2.9 %3.1 %
U.S. state income tax rate change0.2 %0.2 %— %
Excess tax benefits of equity compensation
— %(1.5)%— %
Executive compensation limitations1.8 %1.0 %0.7 %
Research and other tax credits(2.7)%(1.3)%(0.3)%
Energy credits(21.4)%— %— %
Prior year return to provision adjustments2.1 %(0.4)%— %
Foreign derived intangible income deduction(1.3)%(0.9)%(0.7)%
Other, net
— %0.1 %0.1 %
Effective income tax rate3.1 %21.1 %23.9 %
Schedule of Deferred Tax Assets and Liabilities
The tax effects of temporary differences which give rise to future income tax benefits and expenses are as follows:
 December 31,
 20242023
Deferred tax assets:  
Net operating loss$92 $36 
Accruals and reserves4,317 2,943 
Capitalization of research expenses 7,787 6,624 
Inventory17,346 9,394 
Pension obligation— 1,726 
Operating lease liability36,931 23,031 
Equity compensation2,899 3,025 
Total gross deferred tax assets69,372 46,779 
Less: Valuation Allowance— — 
Total deferred tax assets$69,372 $46,779 
Deferred tax liabilities:  
Property, plant & equipment$(163,991)$(160,071)
Intangibles(10,857)(11,156)
Operating lease asset(36,822)(22,981)
Pension obligation(421)— 
Other(2,580)(3,630)
Total deferred tax liabilities(214,671)(197,838)
Net deferred taxes$(145,299)$(151,059)