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Income Taxes
 12 Months Ended
Dec. 31, 2024
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
We provide for income taxes and the related accounts under the asset and liability method. Deferred tax assets and liabilities are determined based on the difference between the financial statement and tax bases of assets and liabilities using enacted tax rates expected to be in effect during the year in which the basis differences reverse. Valuation allowances are established when management determines it is more likely than not that some portion, or all, of the deferred tax assets will not be realized.

The components of Income (loss) before income tax benefit and the Income tax benefit for the years ended December 31 are as follows:
 20242023
Income (loss) before income tax benefit
  
Domestic$33,637 $(64,077)
Foreign9 (81)
$33,646 $(64,158)
Income tax benefit
 
Current income tax provision (benefit): 
Federal$(2,520)$(3,405)
State906 290 
Foreign2 (342)
Total current(1,612)(3,457)
Deferred income tax provision (benefit):
Federal1,373 (16,467)
State144 (4,647)
Total deferred1,517 (21,114)
 $(95)$(24,571)

We made income tax payments of $5.2 million and $1.4 million during 2024 and 2023, respectively. During the same periods, income tax refunds totaled $1.0 million and $14.9 million, respectively.
The provision for income taxes differs from the amount computed by applying the statutory federal income tax rate to income before the provision for income taxes. A reconciliation of the federal statutory and effective income tax rate for the years ended December 31 is as follows:
 20242023
Income (loss) before income tax benefit
$33,646 $(64,158)
Statutory taxes at 21.0% $7,066 $(13,473)
State and local income taxes556 (4,392)
Non-deductible expenses927 1,071 
Percentage depletion(4,683)(3,455)
R&D and other federal credits(796)(109)
Settlements and uncertain tax positions(2,273)(3,512)
Other, net(892)(701)
Income tax benefit
$(95)$(24,571)
Effective income tax rate(0.3)%38.3 %
We recorded an income tax benefit of $0.1 million for the year ended December 31, 2024 on income before income tax of $33.6 million, or 0.3%, compared to an income tax benefit of $24.6 million on loss before income tax of $64.2 million, or 38.3%, for the year ended December 31, 2023. The years ended December 31, 2024 and 2023 both included $4.0 million of discrete tax benefits, primarily from the reversal of uncertain tax provisions. Excluding the $4.0 million of discrete tax benefits in each year, the effective income tax rate in 2024 and 2023 was 11.5% and 32.0%, respectively.
The change in the effective income tax rate for 2024 compared to 2023, excluding the impact of the long-lived asset impairment charge and discrete items, is primarily due to an increase in earnings at entities that do not qualify for percentage depletion. The benefit from percentage depletion is not directly related to the amount of pre-tax income recorded in a period. Accordingly, in periods where income or loss before income tax is relatively small, the proportional effect of the benefit from percentage depletion on the effective tax rate may be significant. When income tax expense is recorded, the benefit from percentage depletion decreases the effective income tax rate, while the effect is to increase the effective income tax rate when a benefit for income taxes is recorded.

A detailed summary of the total deferred tax assets and liabilities in our Consolidated Balance Sheets resulting from differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes is as follows:
 December 31
 20242023
Deferred tax assets  
Lease liabilities$1,252 $7,083 
Tax carryforwards12,371 14,816 
Inventories6,029 4,880 
Accrued liabilities9,430 9,226 
Employee benefits3,630 3,319 
Land valuation adjustment6,489 6,378 
Partnership investment - development costs14,819 12,565 
Other7,866 9,680 
Total deferred tax assets61,886 67,947 
Less: Valuation allowance11,672 11,783 
 50,214 56,164 
Deferred tax liabilities 
Lease right-of-use assets1,209 7,429 
Depreciation and depletion23,731 23,607 
Accrued pension benefits10,633 10,047 
Total deferred tax liabilities35,573 41,083 
Net deferred asset
$14,641 $15,081 

The following table summarizes the tax carryforwards and associated carryforward periods and related valuation allowances where we have determined that realization is uncertain:
 December 31, 2024
 Net deferred tax
asset		Valuation
allowance		Carryforwards
expire during:
State net operating loss$15,584 $14,610 2025 - 2044

 December 31, 2023
 Net deferred tax
asset		Valuation
allowance		Carryforwards
expire during:
State net operating loss$16,526 $14,757 2024-2043

We have a valuation allowance for certain state and foreign deferred tax assets. Based upon the review of historical earnings and the relevant expiration of carryforwards, including utilization limitations in the various state taxing jurisdictions, we believe the valuation allowances are appropriate and do not expect to release valuation allowances within the next twelve months that would have a significant effect on our financial position or results of operations.
Since 2021, we have participated in a voluntary program with the IRS called Compliance Assurance Process (CAP). The objective of CAP is to contemporaneously work with the IRS to achieve federal tax compliance and resolve all or most issues prior to the filing of the tax return. In general, we operate in taxing jurisdictions that provide a statute of limitations period ranging from three to five years for the taxing authorities to review the applicable tax filings. Our tax returns are under routine examination by various taxing authorities. We have not been informed of any material assessment for which an accrual has not been previously provided and would vigorously contest any material assessment. Management believes any potential adjustment would not materially affect our financial condition or results of operations.
The following is a reconciliation of our total gross unrecognized tax benefits, defined as the aggregate tax effect of differences between tax return positions and the benefits recognized in the financial statements for the years ended December 31, 2024 and 2023. Approximately $0.6 million and $2.8 million of the gross unrecognized tax benefits as of December 31, 2024 and 2023, respectively, relate to permanent items that, if recognized, would impact the effective income tax rate. This amount differs from the gross unrecognized tax benefits presented in the table below due to (1) the deferred tax asset which would be available if the position were not sustained upon audit and (2) the decrease in U.S. federal income taxes which would occur upon the recognition of the state tax benefits included herein.
 20242023
Balance at January 1$6,148 $9,626 
Decreases based on lapse of applicable statute of limitations(5,396)(3,478)
Balance at December 31$752 $6,148 
We record interest and penalties on uncertain tax positions as a component of the income tax provision. We recognized a net benefit of less than $0.1 million in interest and penalties related to uncertain tax positions during 2024 and 2023. The total amount of interest and penalties accrued was $0.2 million as of December 31, 2024 and 2023.
We expect the amount of unrecognized tax benefits will change within the next 12 months; however, the change is not expected to have a significant effect on our financial position, results of operations or cash flows.