v3.25.4
Income Taxes Income Taxes (Tables)
 12 Months Ended
Dec. 31, 2025
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
The income tax expense (benefit) is as follows (in millions):
Year Ended December 31,
202520242023
Current:
  Federal$— $— $— 
  State and local0.7 0.5 1.6 
  Foreign— — — 
0.7 0.5 1.6 
Deferred:
  Federal (a)8.1 (0.6)(0.7)
  State and local(0.7)(0.1)(0.8)
  Foreign— — — 
7.4 (0.7)(1.5)
Income tax expense (benefit)$8.1 $(0.2)$0.1 
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Future tax consequences of temporary differences between the carrying amounts for financial reporting purposes and the Company’s estimate of the tax bases of its assets and liabilities result in deferred tax assets and liabilities, as follows (in millions):
December 31,
20252024
Deferred tax assets:
Employee benefits costs
$21.1 $22.1 
Inventory
19.0 27.2 
Property, plant and equipment
178.1 178.2 
Research and experimental expenditures1.5 2.4 
Net operating loss and credit carryforwards159.0 165.2 
Accrued expenses
0.5 0.4 
Long-term debt and financing costs
0.9 3.8 
Lease liability
0.5 0.5 
Other
0.7 0.8 
Deferred tax assets
381.3 400.6 
Valuation allowance
(355.4)(365.7)
Deferred tax assets, net of valuation allowance
$25.9 $34.9 
Deferred tax liabilities:
Intangible assets
$3.3 $4.9 
Lease asset
0.4 0.3 
Prepaid expenses
0.3 0.4 
Deferred tax liabilities
4.0 5.6 
Deferred tax assets, net$21.9 $29.3 
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
A reconciliation of income taxes calculated based on the federal statutory income tax rate and the effective tax rate follows:
Year Ended December 31,
202520242023
AmountPercentageAmountPercentageAmountPercentage
Federal statutory tax rate$17.9 21 %$15.3 21 %$17.7 21 %
State and local income taxes, net of federal income tax effect (1)
(0.3)— (0.3)— —— 
Changes in valuation allowances
(10.2)(12)(16.6)(23)(19.4)(23)
Nontaxable or nondeductible items
Nondeductible Executive compensation under IRC section 162(m)
0.31 0.91 0.81 
Other
0.2— (0.2)— 0.4— 
Changes in unrecognized tax benefits
0.2— 0.71 0.61 
Effective tax rate
$8.1 10 %$(0.2)— %$0.1 — %

(1) State Taxes in Maryland (greater than 50 percent) of the tax effect in this category for the calendar year ending December 31, 2025.
Schedule of Unrecognized Tax Benefits Roll Forward
A reconciliation of the beginning and ending amount of unrecognized tax benefits follows (in millions):
Year Ended December 31,
20252024
Balance at beginning of the period$3.4 $2.9 
Additions to tax positions of current period0.2 0.5 
Reductions to tax positions of prior years— — 
Balance at end of the period$3.6 $3.4