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Stock Option Plans - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
Stock Option Plans - Narrative (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 5,000,000
Total unrecognized compensation cost	$ 48,300,000
Recognized average period	2 years 6 months 18 days
Total grant date fair value of shares vested	$ 5,000,000
Issued outstanding performance-based awards (in shares)			150,000
Awards issued (in shares)	819,227
PSUs term		5 years
Expense from PSUs	$ 100,000
Expected dividend yield		0.00%
Unrecognized stock-based compensation cost	$ 1,200,000
Stock Plan 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units granted (in shares)	819,227
Recognized average period	1 year 11 months 12 days
Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost	$ 0
Stock-based compensation expense	$ 2,500,000
Awards issued (in shares)		2,216,870
Vesting threshold trading days	20 days
Trading window	30 days
Performance Based Awards \| Specific Number Of Policies In Force
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage		33.30%
Performance Based Awards \| Positive Operating Cash Flow For At Least One Financial Quarter
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage		33.30%
Performance Based Awards \| Specific Price Per Share Over Time Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage		33.30%
Stock Plan 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)	38,018,247
Vesting period	4 years
Expected dividend yield	0.00%