Fair Value - Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financial assets:
Loans and investments, net	$ 12,892,796	$ 14,254,674
Loans held-for-sale, net	368,330	368,066
Securities held-to-maturity, net	155,172	156,547
Financial liabilities:
Credit and repurchase facilities	3,391,441	3,841,814
Securitized debt	7,004,634	7,849,270
Senior unsecured notes	1,332,926	1,385,994
Convertible senior unsecured notes	282,428	280,356
Junior subordinated notes	143,695	143,128
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	1,211,633
Convertible senior unsecured notes	0
Junior subordinated notes	0
Level 2
Financial assets:
Loans and investments, net	0
Loans held-for-sale, net	370,232
Capitalized mortgage servicing rights, net	0
Securities held-to-maturity, net	0
Financial liabilities:
Credit and repurchase facilities	354,586
Securitized debt	0
Senior unsecured notes	0
Convertible senior unsecured notes	290,019
Junior subordinated notes	0
Level 3
Financial assets:
Loans and investments, net	12,911,172
Loans held-for-sale, net	4,302
Capitalized mortgage servicing rights, net	538,078
Securities held-to-maturity, net	126,608
Financial liabilities:
Credit and repurchase facilities	3,028,347
Securitized debt	6,899,147
Senior unsecured notes	0
Convertible senior unsecured notes	0
Junior subordinated notes	105,821
Carrying Value
Financial assets:
Loans and investments, net	12,892,796	14,254,674
Loans held-for-sale, net	364,320	354,070
Capitalized mortgage servicing rights, net	392,203
Securities held-to-maturity, net	155,172	156,547
Financial liabilities:
Credit and repurchase facilities	3,391,441	3,841,814
Securitized debt	7,004,634	7,849,270
Senior unsecured notes	1,332,926	1,385,994
Convertible senior unsecured notes	282,428	280,356
Junior subordinated notes	143,695	143,128
Fair Value
Financial assets:
Loans and investments, net	12,911,172	14,468,418
Loans held-for-sale, net	374,534	362,054
Capitalized mortgage servicing rights, net	538,078
Securities held-to-maturity, net	126,608	144,571
Financial liabilities:
Credit and repurchase facilities	3,382,933	3,828,192
Securitized debt	6,899,147	7,560,541
Senior unsecured notes	1,211,633	1,262,560
Convertible senior unsecured notes	290,019	287,834
Junior subordinated notes	$ 105,821	$ 103,977

Represents capitalized mortgage servicing rights.

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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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No definition available.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder.

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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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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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.

+ References

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Amount, after valuation allowance, of financing receivable held for sale and not part of disposal group. Excludes loan covered under loss sharing agreement and loan classified as investment in debt security.

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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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