Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Summary Of Significant Accounting Policies [Line Items]
Other	$ 1,242	$ 623
Other assets	17,313		$ 14,717
Claims handling services
Summary Of Significant Accounting Policies [Line Items]
Other	1,007
Other assets	$ 248		$ 314