Description of Business and Summary of Significant Accounting Policies - Premium Deficiency (Details) - USD ($)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Premium deficiency	$ 300,000	$ 0

Amount of expense for premium deficiency and loss recognition testing on long-duration contract issued by insurance entity. Excludes closed block.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 50
-Paragraph 6
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=124506351&loc=d3e14931-158439

Name:	us-gaap_PremiumDeficiencyTestingExpenseLongDurationContractAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration