Contract Assets - Summary Of Contract Assets (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Contract With Customer, Asset [Roll Forward]
Beginning balance	$ 112,956
Increase of contract assets due to new business generation	47,425
Adjustment of contract assets due to estimation of revenue from performance obligations satisfied in previous periods	2,641
Receivables transferred from contract assets upon billing the lending institutions	(19,800)
Payments received from insurance carriers	(35,818)
Provision for expected credit losses	48
Ending balance	107,452
Profit Share
Contract With Customer, Asset [Roll Forward]
Beginning balance	105,486
Increase of contract assets due to new business generation	25,669
Adjustment of contract assets due to estimation of revenue from performance obligations satisfied in previous periods	2,641	$ 5,100
Receivables transferred from contract assets upon billing the lending institutions	0
Payments received from insurance carriers	(33,831)
Provision for expected credit losses	43
Ending balance	100,008
TPA Fees
Contract With Customer, Asset [Roll Forward]
Beginning balance	1,316
Increase of contract assets due to new business generation	2,030
Adjustment of contract assets due to estimation of revenue from performance obligations satisfied in previous periods	0
Receivables transferred from contract assets upon billing the lending institutions	0
Payments received from insurance carriers	(1,987)
Provision for expected credit losses	1
Ending balance	1,360
Program Fees
Contract With Customer, Asset [Roll Forward]
Beginning balance	6,154
Increase of contract assets due to new business generation	19,726
Adjustment of contract assets due to estimation of revenue from performance obligations satisfied in previous periods	0
Receivables transferred from contract assets upon billing the lending institutions	(19,800)
Payments received from insurance carriers	0
Provision for expected credit losses	4
Ending balance	$ 6,084