Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Summary Of Significant Accounting Policies [Line Items]
Other	$ 511	$ 777	$ 1,753	$ 1,400
Other assets	28,796		28,796		$ 14,717
Claims handling services
Summary Of Significant Accounting Policies [Line Items]
Other	372	$ 207	1,379	$ 207
Other assets	$ 321		$ 321		$ 314