Variable Interest Entities - Assets and Liabilities of Consolidated CLO (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets:
Cash and cash equivalents	$ 327,363	$ 194,660
Loans held-for-investment	16,606,862	17,574,249
Investment securities	716,073	735,562
Accrued interest receivable	194,498	200,867
Other assets	319,853	420,773
Total Assets	66,169,669	69,504,196
Liabilities
Collateralized loan obligations and single asset securitization, net	3,223,867	3,491,292
Total Liabilities	59,129,488	62,481,214
Primary Beneficiary
Assets:
Total Assets	48,000
Liabilities
Total Liabilities	10,200
CLOs and SASB | Primary Beneficiary
Assets:
Cash and cash equivalents	136,858	33,175
Investment securities	9,326	9,946
Accrued interest receivable	24,408	26,355
Other assets	5,304	9,197
Total Assets	4,023,888	4,288,770
Liabilities
Accounts payable, accrued expenses and other liabilities	20,100	21,174
Collateralized loan obligations and single asset securitization, net	3,223,867	3,491,292
Total Liabilities	3,243,967	3,512,466
CLOs and SASB | Primary Beneficiary | Loans held for investment
Assets:
Loans held-for-investment	$ 3,847,992	$ 4,210,097