Other Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Other Assets [Abstract]
Loaned securities	$ 119,837	$ 203,693
Company-owned life insurance	108,226	106,417
Prepaid reinsurance premiums	92,293	100,443
Right-of-use assets	15,150	16,292
Other	$ 34,438	$ 32,960
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Total other assets	Total other assets
Total other assets	$ 369,944	$ 459,805