Summary of Significant Accounting Policies - Additional Information (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) Segment Entity	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2018 USD ($)
Accounting Policies [Line Items]
Number of consolidated variable interest entities | Entity			4
Additional Paid in Capital, Common Stock						$ 7,837,000
Number of reporting segments | Segment			1
Number of operating segments | Segment			1
Assets, fair value disclosure	$ 2,549,000		$ 2,549,000		$ 2,446,000
Net loss attributable to noncontrolling interest	0	$ 0	0	$ 0
Federal deposit insurance corporation premium expense			$ 451,766,000		465,824,000
Award requisite service period			4 years
Revenues	366,180,000	308,739,000	$ 711,472,000	575,739,000
Level 3
Accounting Policies [Line Items]
Assets, fair value disclosure	0		0		0
Liabilities, fair value disclosure	0		0		0
Directly from CMS
Accounting Policies [Line Items]
Revenues	$ 13,110,000	$ 13,452,000	$ 25,412,000	$ 13,452,000
Medicare Advantage Plan
Accounting Policies [Line Items]
Minimum loss ratio amounts payable					$ 0
Percentage of consumer discounts on brand name			75.00%
Medicare Advantage Plan | Minimum
Accounting Policies [Line Items]
Loss ratio			85.00%