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Revenue - Commission Revenue by Segment (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Disaggregation of Revenue [Line Items] |  |
Total revenue | $ 532,410 | $ 452,871
Basic (in dollars per share) | $ (1.19) | $ (2.37)
Diluted (in dollars per share) | $ (1.19) | $ (2.37)
Commission |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | $ 461,647 | $ 403,924
Commission revenue from members approved during the period |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 429,350 | 345,876
Net commission revenue from members approved in prior periods |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | $ 22,735 | $ 48,075
Basic (in dollars per share) | $ 0.59 | $ 1.30
Diluted (in dollars per share) | $ 0.59 | $ 1.30
Commission revenue from renewals of small business members during the period |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | $ 9,562 | $ 9,973
Medicare Segment | Commission |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 431,565 | 359,631
Medicare Segment | Commission revenue from members approved during the period |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 412,887 | 326,087
Medicare Segment | Net commission revenue from members approved in prior periods |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 18,678 | 33,544
Decrease in revenue | 5,300 | 4,300
Medicare Segment | Commission revenue from renewals of small business members during the period |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 0 | 0
Employer and Individual | Commission |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 30,082 | 44,293
Employer and Individual | Commission revenue from members approved during the period |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 16,463 | 19,789
Employer and Individual | Net commission revenue from members approved in prior periods |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 4,057 | 14,531
Employer and Individual | Commission revenue from renewals of small business members during the period |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | $ 9,562 | $ 9,973

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