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Revenue - Commission Revenue by Segment (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | $ 53,869 | $ 58,409 | $ 227,770 | $ 217,229
Basic (in dollars per share) | $ (1.46) | $ (1.83) | $ (2.78) | $ (4.13)
Diluted (in dollars per share) | $ (1.46) | $ (1.83) | $ (2.78) | $ (4.13)
Commission |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | $ 47,223 | $ 48,222 | $ 200,900 | $ 185,996
Commission revenue from members approved during the period |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 33,283 | 45,172 | 153,963 | 163,807
Commission revenue from renewals of small business members during the period |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 1,737 | 1,852 | 6,479 | 7,022
Total Net Commission Revenue from Members Approved in Prior Periods |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | $ 12,203 | $ 1,198 | $ 40,458 | $ 15,167
Basic (in dollars per share) | $ 0.30 | $ 0.03 | $ 1.01 | $ 0.39
Diluted (in dollars per share) | $ 0.30 | $ 0.03 | $ 1.01 | $ 0.39
Medicare | Commission |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | $ 43,483 | $ 43,414 | $ 185,439 | $ 164,790
Medicare | Commission revenue from members approved during the period |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 31,402 | 42,324 | 146,304 | 152,017
Medicare | Commission revenue from renewals of small business members during the period |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue |  |  | 0 |
Medicare | Total Net Commission Revenue from Members Approved in Prior Periods |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 12,081 | 1,090 | 39,135 | 12,773
Employer and Individual | Commission |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 3,740 | 4,808 | 15,461 | 21,206
Employer and Individual | Commission revenue from members approved during the period |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 1,881 | 2,848 | 7,659 | 11,790
Employer and Individual | Commission revenue from renewals of small business members during the period |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 1,737 | 1,852 | 6,479 | 7,022
Employer and Individual | Total Net Commission Revenue from Members Approved in Prior Periods |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | $ 122 | $ 108 | $ 1,323 | $ 2,394

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