Long Term Debt - Additional Information (Detail) - USD ($) $ in Millions			1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	May 28, 2024	May 01, 2024	Feb. 29, 2024	Jan. 31, 2024	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Debt Instrument [Line Items]
Loss on debt amendments and extinguishments					$ 2.5	$ 10.7	$ 2.5	$ 10.7
Accumulated gain on swaps amortized to interest expense									$ 7.0
Interest rate					4.50%		4.50%		4.50%
Interest Rate Swap Agreements Three [Member]
Debt Instrument [Line Items]
Derivative notional amount			$ 137.5	$ 137.5
Maturity date			Dec. 31, 2026	Dec. 31, 2027
CUSA [Member]
Debt Instrument [Line Items]
Average interest rate on outstanding borrowings					7.10%		7.10%
Loss on debt amendments and extinguishments					$ 2.5	$ 10.7	$ 2.5	$ 10.7
Interest rate		8.75%
CUSA [Member] | 8.75 % Senior Notes
Debt Instrument [Line Items]
Amount that is outstanding after tender		$ 150.0
Debt instrument, Accrued interest		156.6
Loss on debt amendments and extinguishments		$ 1.0
Interest rate		8.75%
Term Loan Credit facility | Senior Secured Credit Facility
Debt Instrument [Line Items]
Reduction in Interest Rate	0.50%
Reset Soft Call Intrest Rate	101.00%
Term Loan Credit facility | CUSA [Member] | Senior Secured Credit Facility
Debt Instrument [Line Items]
Quarterly principal payments due							$ 1.6
Debt issuance costs	$ 1.0
Capitalized debt issuance costs	0.8
Legal and other fees	0.2
Write off amount of unamortized debt issuance costs and original issue discount	$ 1.3
Last quarterly payment date							Mar. 31, 2030
Final principal payment due date							May 24, 2030
Revolving Credit Line | Amended Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Amount outstanding under the term loan					641.9		$ 641.9
Amount outstanding under the revolving credit line					$ 0.0		$ 0.0