Summary of Significant Accounting Policies - Disaggregation Of Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Product Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 166,632	$ 91,065
Automotive [Member]
Product Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	152,715	77,538
Home and renters [Member]
Product Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	13,904	12,689
Other [Member]
Product Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 13	$ 838