Description of Business and Summary of Significant Accounting Policies - Cash and cash equivalents (Details) $ in Thousands	Dec. 31, 2022 USD ($) item	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) item	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Description of Business and Summary of Significant Accounting Policies
Restricted cash pledged as collateral	$ 5,100
Restricted cash pledged against obligations to policyholders and creditors	1,000				$ 300
Restricted funds held for payment of possible warranty claims	$ 5,000				$ 5,900
Number of states regulatory guidelines of warranty claims | item	19				25
Customer deposits					$ 300
Indemnification hold back cost	$ 2,400				2,600
Indemnification hold-back, noncurrent					$ 500
Restricted Cash, Noncurrent, Statement of Financial Position [Extensible Enumeration]					Other Assets, Noncurrent
Cash and cash equivalents	215,060	$ 260,198	$ 271,003	$ 292,373	$ 315,741
Restricted cash and restricted cash equivalents - current	13,545	16,296	10,574	10,162	8,551
Restricted cash and restricted cash equivalents - non-current		$ 500	$ 500	$ 500	500
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Total	$ 228,605				$ 324,792	$ 207,453	$ 7,179