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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized stock based compensation compensation	$ 6.5		$ 6.5
Number of options outstanding, including both vested and non-vested options.	20,843,522		20,843,522
Other Subsidiaries Equity Plan
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized stock based compensation compensation	$ 0.4		$ 0.4
Expected weighted average period			10 months 24 days
Share based compensation expenses	0.1	$ 0.2	$ 0.2	$ 0.4
Restricted Stock [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized stock based compensation compensation	3.2		$ 3.2
Expected weighted average period			1 year 8 months 15 days
Fair Value Of Restricted Stock			$ 0.0
Share based compensation expenses	$ 0.5	0.0	$ 0.6	0.0
Specified Performance Based Vesting [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share based payment arrangement, Options expected to vest outstanding	172,566		172,566
HSOP Plan[Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Shares reserved for future issuance	257,419		257,419
Unrecognized stock based compensation compensation	$ 1.4		$ 1.4
Expected weighted average period			2 months 12 days
Share based compensation expenses	0.9	1.2	$ 1.8	2.5
Two Thousand And Twenty Incentive Plan [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized stock based compensation compensation	52.8		$ 52.8
Expected weighted average period			1 year 10 months 28 days
Share based compensation expenses	$ 7.3	$ 8.1	$ 14.7	$ 16.7
Number of options outstanding	0		0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			9,862,628
Two Thousand And Twenty Incentive Plan [Member] \| Share-based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Weighted average grant-date fair value of options granted			$ 0.96
Two Thousand And Twenty One Incentive Award Plan [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Shares reserved for future issuance	30,929,033		30,929,033