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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Deferred tax assets, valuation allowance | $ 152,104 | $ 147,694
Income Tax Credits, Expiration Date | Dec. 31, 2034 |
Interest or penalties | $ 0 | 0
Deferred tax assets for S.174 capitalization | 24,437 | $ 28,800
Federal |  |
Operating Loss Carryforwards | 277,700 |
Operating loss carryforwards without expiration | 254,000 |
Income tax credits | $ 15,000 |
Amortization period | 5 years |
State |  |
Operating Loss Carryforwards | $ 568,200 |
Operating loss carryforwards without expiration | 500 |
Income tax credits | $ 5,100 |
Foreign |  |
Amortization period | 15 years |

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