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Leases (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended | 36 Months Ended
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2023
Leases [Abstract] |  |  |  |  |
Operating Lease, Weighted Average Remaining Lease Term | 2 years 2 months 12 days | 3 years 1 month 6 days |  |  | 3 years 1 month 6 days
Operating Lease, Weighted Average Discount Rate, Percent | 11.70% | 11.30% |  |  | 11.30%
Operating Lease, Right-of-Use Asset | $ 1.6 | $ 2.7 |  |  | $ 2.7
Operating Lease, Liability, Current | 1.4 | 1.4 |  |  | 1.4
Operating Lease, Liability, Noncurrent | 1.2 | 2.6 |  |  | 2.6
Operating Lease, Liability | 2.6 | 4.0 |  |  | $ 4.0
Operating Lease, Expense | 0.8 | 0.1 | $ 0.7 |  |
Operating Lease, Expense Adjustment | (0.9) | (1.5) | (1.6) |  |
Operating Lease, Payments | $ (1.9) | $ (1.7) | (1.6) |  |
Operating Lease, Liability, Decrease |  |  |  | $ (1.0) |
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Other long-term assets | Other long-term assets |  |  | Other long-term assets
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | Accounts payable and accrued liabilities | Accounts payable and accrued liabilities |  |  | Accounts payable and accrued liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Other long-term liabilities | Other long-term liabilities |  |  | Other long-term liabilities
Increase (Decrease) in Operating Lease Liability |  |  | $ 6.6 |  | $ (4.2)

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- Definition Amount of increase (decrease) in obligation for operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(1) -SubTopic 20 -Topic 842 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-4 + Details
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- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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