Contract Assets and Excess Profit Share Receipts - Summary of Contract Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Contract With Customer, Asset [Roll Forward]
Beginning balance	$ 29,314	$ 75,430
Increase of contract assets due to new business generation	120,436	140,413
Change in estimates of revenue from performance obligations satisfied in previous periods	(48,546)	(22,812)
Payables (receivables) transferred from contract assets	(53,721)	(67,440)
Payments received from insurance carriers	(32,458)	(96,325)
Provision for expected credit losses	42	48
Ending balance	15,067	29,314
Profit Share
Contract With Customer, Asset [Roll Forward]
Beginning balance	22,855	65,889
Increase of contract assets due to new business generation	52,979	66,113
Change in estimates of revenue from performance obligations satisfied in previous periods	(48,546)	(22,812)
Payables (receivables) transferred from contract assets	5,144	0
Payments received from insurance carriers	(22,834)	(86,383)
Provision for expected credit losses	35	48
Ending balance	9,633	22,855
Program Fee
Contract With Customer, Asset [Roll Forward]
Beginning balance	4,738	7,932
Increase of contract assets due to new business generation	57,350	64,245
Change in estimates of revenue from performance obligations satisfied in previous periods	0	0
Payables (receivables) transferred from contract assets	(58,865)	(67,440)
Payments received from insurance carriers	0	0
Provision for expected credit losses	6	1
Ending balance	3,229	4,738
TPA Fee
Contract With Customer, Asset [Roll Forward]
Beginning balance	1,721	1,609
Increase of contract assets due to new business generation	10,107	10,055
Change in estimates of revenue from performance obligations satisfied in previous periods	0	0
Payables (receivables) transferred from contract assets	0	0
Payments received from insurance carriers	(9,624)	(9,942)
Provision for expected credit losses	1	(1)
Ending balance	2,205	$ 1,721
Future Claim Payments and Previous Profit Share Receipts
Contract With Customer, Asset [Roll Forward]
Change in estimates of revenue from performance obligations satisfied in previous periods	$ (5,100)

Contract With Customer Asset Additions

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Payments received from insurance carriers.

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- Definition

Contract With Customer, Asset, Reclassified To Receivable (Payable)

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Contract With Customer, Asset

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No definition available.

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- Definition

Amount of expense (reversal of expense) for expected credit loss on right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from change in estimate of transaction price which increases (decreases) right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. Includes, but is not limited to, change in assessment of whether estimate of variable consideration is constrained.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 606
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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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