Significant Accounting Policies - Narratives (Details) - customer  | 
3 Months Ended | 12 Months Ended | |
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Mar. 31, 2024  | 
Mar. 31, 2023  | 
Dec. 31, 2023  | 
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| Concentration Risk | |||
| Number of customers (customer) | 4 | 3 | |
| Four Health Plan Customer | Revenue | Customer Concentration | |||
| Concentration Risk | |||
| Number of customers (customer) | 4 | 4 | |
| Percentage of total revenue (as a percent) | 61.00% | 61.00% | |
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- Definition Number Of Customers No definition available. 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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