Debt - Additional Information (Detail) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)
Debt Instrument [Line Items]
Percentage of voting equity of subsidiaries		65.00%
Debt instrument interest rate	5.68%	5.68%
Line of credit facility, available borrowing capacity	$ 114.3	$ 114.3
Weighted average interest rate	5.67%	5.68%
Letters of Credit [Member]
Debt Instrument [Line Items]
Available for issuance of letter of credit	$ 5.0	$ 5.0
Issuance of letter of credit	0.7	$ 0.7
Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility maturity date		Dec. 31, 2026
Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	150.0	$ 150.0
Increase (decrease) in line of credit facility	$ 50.0	$ 50.0