Stock-based Compensation - Narrative (Details) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended			12 Months Ended
	Jun. 30, 2019 shares	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2021 USD ($) installment $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) | shares					286,000	496,000	406,000
Weighted average grant date fair value (in dollars per share) | $ / shares					$ 12.80	$ 6.03	$ 10.77
Aggregate intrinsic value of options exercised					$ 14.9	$ 1.8	$ 13.6
Unrecognized compensation cost, options					$ 4.4
Nonemployee Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) | shares					9,000	76,000	0
Weighted average grant date fair value (in dollars per share) | $ / shares					$ 11.29	$ 5.04
Aggregate intrinsic value of options exercised					$ 0.1	$ 0.4
Incentive Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option price as a percent of common stock					100.00%
Non-Statutory Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option price as a percent of common stock					85.00%
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of voting interests					10.00%
Purchase price of common stock when voting percent is above minimum threshold					110.00%
Expiration period					10 years
Vesting period of units granted					4 years
Expiration period of options upon employee's termination of service					3 months
Weighted-average remaining amortization period					2 years 4 months 24 days
Stock options | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of units granted					1 year
Award vesting rights percentage					25.00%
Stock options | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of units granted					3 years
Award vesting rights percentage					75.00%
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average remaining amortization period					1 year 7 months 6 days
Equity instruments other than options, aggregate intrinsic value, vested					$ 1.8	2.1	$ 4.1
Unrecognized compensation cost, awards other than options					$ 2.8
RSUs | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of units granted					3 years
Award vesting rights percentage					33.00%
RSUs | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of units granted					4 years
Award vesting rights percentage					25.00%
PBOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Threshold level multiplier	0
Aggregate intrinsic value of options exercised					$ 0.3	0.0	1.3
Weighted-average remaining amortization period					1 year
Unrecognized compensation cost, awards other than options					$ 1.3
RSAs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average remaining amortization period					1 year 1 month 6 days
Equity instruments other than options, aggregate intrinsic value, vested					$ 1.3	0.4	1.0
Unrecognized compensation cost, awards other than options					$ 0.7
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average remaining amortization period					6 months
Equity instruments other than options, aggregate intrinsic value, vested					$ 1.3	$ 1.3	$ 3.8
Unrecognized compensation cost, awards other than options					$ 1.0
2019 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares remaining available for issuance (in shares) | shares	7,897,144				5,900,000
Shares reserved for future issuance (in shares) | shares	14,000,000
Number of shares authorized (in shares) | shares	8,100,000
2019 Plan | PBOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of installments | installment					2
2019 Plan | PBOs | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future vesting rights, percentage					50.00%
2019 Plan | PBOs | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future vesting rights, percentage					50.00%
2021 PSU | PBOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated performance goal achievement rate					146.00%
2020 PBO | PBOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated performance goal achievement rate			44.00%		73.00%
2020 PSU | PBOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated performance goal achievement rate			88.00%
2020 PSU and PBO Plan | PBOs | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights percentage			50.00%
2020 PSU and PBO Plan | PBOs | Tranche Two | Forecast
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights percentage		50.00%
2019 PSU | PBOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated performance goal achievement rate				84.00%
2019 PBO | PBOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated performance goal achievement rate				42.00%
2019 PSU and PBO Plan | PBOs | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights percentage				50.00%
2019 PSU and PBO Plan | PBOs | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights percentage			50.00%