Fair Value - Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Financial assets:
Loans and investments, net	$ 11,603,944	$ 12,377,806
Loans held-for-sale, net	347,439	552,325
Securities held-to-maturity, net	156,080	155,279
Financial liabilities:
Credit and repurchase facilities	3,160,384	3,237,827
Securitized debt	5,716,513	6,935,010
Senior unsecured notes	1,245,956	1,333,968
Convertible senior unsecured notes	284,473	283,118
Junior subordinated notes	144,275	143,896
Level 1
Financial assets:
Loans and investments, net	0
Loans held-for-sale, net	0
Capitalized mortgage servicing rights, net	0
Securities held-to-maturity, net	0
Financial liabilities:
Credit and repurchase facilities	0
Securitized debt	0
Senior unsecured notes	1,112,206
Convertible senior unsecured notes	0
Junior subordinated notes	0
Level 2
Financial assets:
Loans and investments, net	0
Loans held-for-sale, net	350,343
Capitalized mortgage servicing rights, net	0
Securities held-to-maturity, net	0
Financial liabilities:
Credit and repurchase facilities	335,171
Securitized debt	0
Senior unsecured notes	0
Convertible senior unsecured notes	287,859
Junior subordinated notes	0
Level 3
Financial assets:
Loans and investments, net	11,555,363
Loans held-for-sale, net	4,475
Capitalized mortgage servicing rights, net	520,994
Securities held-to-maturity, net	134,991
Financial liabilities:
Credit and repurchase facilities	2,818,831
Securitized debt	5,674,069
Senior unsecured notes	0
Convertible senior unsecured notes	0
Junior subordinated notes	107,761
Carrying Value
Financial assets:
Loans and investments, net	11,603,944	12,377,806
Loans held-for-sale, net	342,870	551,707
Capitalized mortgage servicing rights, net	380,719
Securities held-to-maturity, net	156,080	155,279
Financial liabilities:
Credit and repurchase facilities	3,160,384	3,237,827
Securitized debt	5,716,513	6,935,010
Senior unsecured notes	1,245,956	1,333,968
Convertible senior unsecured notes	284,473	283,118
Junior subordinated notes	144,275	143,896
Fair Value
Financial assets:
Loans and investments, net	11,555,363	12,452,563
Loans held-for-sale, net	354,818	566,451
Capitalized mortgage servicing rights, net	520,994
Securities held-to-maturity, net	134,991	129,390
Financial liabilities:
Credit and repurchase facilities	3,154,002	3,228,324
Securitized debt	5,674,069	6,864,557
Senior unsecured notes	1,112,206	1,214,331
Convertible senior unsecured notes	287,859	301,156
Junior subordinated notes	$ 107,761	$ 106,444

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Carrying value as of the balance sheet date, of securities sold under agreements to repurchase and the carrying value, as of the balance sheet date, of the outstanding borrowings under warehouse and revolving lines of credit.

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer.

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The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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