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Income Taxes (Income Tax Rate Reconciliation) (Detail) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Effective income tax rate continuing operations tax rate reconciliation [Abstract] |  |  |
Federal income tax computed at the statutory rate | 21.00% | 21.00% | 21.00%
Increase (reduction) in taxes resulting from: [Abstract] |  |  |
Change in valuation allowance | (18.90%) | (18.80%) | (9.40%)
Deferred inventory adjustments | (0.90%) | (1.30%) | (9.30%)
Excessive Remuneration Sec. 162(m) | (0.40%) | (1.10%) | (1.70%)
Other | (0.80%) | 0.20% | (1.10%)
Effective tax rate | 0.00% | 0.00% | (0.50%)

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