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Basis of Presentation and Significant Accounting Policies - Concentration of Risk (Details) $ in Millions |  | 3 Months Ended
--- | --- | ---
Dec. 31, 2023 customer | Mar. 31, 2024 USD ($) customer | Mar. 31, 2023 customer
Concentration of Risk |  |  |
Trade receivables | $ |  | $ 0.0 |
Customer Concentration Risk | Revenues |  |  |
Concentration of Risk |  |  |
Number of major partners |  | 2 |
Customer Concentration Risk | Revenues | Partner 1 |  |  |
Concentration of Risk |  |  |
Number of major partners |  |  | 1
Concentration risk (as a percent) |  | 67.00% | 100.00%
Customer Concentration Risk | Revenues | Partner 2 |  |  |
Concentration of Risk |  |  |
Concentration risk (as a percent) |  | 33.00% |
Credit Concentration Risk | Trade Receivables | Partner 1 |  |  |
Concentration of Risk |  |  |
Number of major partners | 1 |  |
Concentration risk (as a percent) | 100.00% |  |

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-42 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-21 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-20 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482861/275-10-50-18 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482861/275-10-50-20 + Details
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