Underwriting, Acquisition and Insurance Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Other Income and Expenses [Abstract]
Amortization of policy acquisition costs	$ 21,235	$ 13,421
Other operating and general expenses	30,420	27,113
Total underwriting, acquisition and insurance expenses	$ 51,655	$ 40,534