Mortgage Loans Held for Sale - Schedule of Disposal Groups, Including Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net investment income	$ 258,430	$ 195,658	$ 147,909
Interest expense	89,695	84,454	$ 84,344
Disposal Group Held for sale Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net investment income	4,212	39
Interest expense	3,507	15
Net interest margin on mortgage loans held for sale	$ 705	$ 24