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Amount of assets pledged to secure a debt instrument.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein.

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The cash inflow from repayments of the balance excluding interest (principal) on loans receivable and leases held for investment purposes.

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Aggregate amount of servicing assets that are subsequently measured at fair value and servicing assets that are subsequently measured using the amortization method.

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Other Investments - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024 USD ($) Investment numberOfInvestment	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) partnership Investment numberOfInvestment	Jun. 30, 2023 USD ($)	Dec. 31, 2018 partnership	Dec. 31, 2023 USD ($)
Net Investment Income [Line Items]
Number of partnerships consolidated \| partnership			2		2
Carrying Value of Collateral	$ 3,700,905		$ 3,700,905			$ 3,405,564
Investment fair value changes, net	1,098	$ (13,517)	22,935	$ (17,909)
Interest income	225,417	$ 178,981	430,157	$ 357,497
Strategic investments
Net Investment Income [Line Items]
Investment fair value changes, net	$ (1,000)		$ (1,000)
Number of investments made \| numberOfInvestment	8,000		8,000
Investments	$ 37,000		$ 37,000
Sale of investments	200		300
MSRs
Net Investment Income [Line Items]
Mortgage servicing rights	28,653		28,653			24,877
Aggregate principal balance	1,950,000		1,950,000			2,030,000
MSR income, net	$ 4,000		$ 8,000
RWT Horizons \| Strategic investments
Net Investment Income [Line Items]
Number of investments made \| Investment	39		39
Investments	$ 22,000		$ 22,000
Oaktree Capital Management, L.P. \| Strategic investments
Net Investment Income [Line Items]
Investments	$ 6,000		$ 6,000
Equity method investment, ownership percentage	20.00%		20.00%
CPP Investments \| Strategic investments
Net Investment Income [Line Items]
Investments	$ 1,000		$ 1,000
Equity method investment, ownership percentage	20.00%		20.00%
Servicer advance financing
Net Investment Income [Line Items]
Carrying Value of Collateral	$ 176,000		$ 176,000
Repayments received	9,000		9,000
Income (loss) from equity method investments	5,000		10,000
Investment fair value changes, net	12,000		11,000
Held-for-sale residential loans
Net Investment Income [Line Items]
Mortgage servicing rights	227,363		227,363			225,345
Servicing asset, unpaid principal balance on underlying loan	9,640,000		9,640,000
Excess MSRs
Net Investment Income [Line Items]
Mortgage servicing rights	34,754		34,754			$ 37,367
Investment fair value changes, net	(1,000)		(3,000)
Interest income	3,000		7,000
Fair value option elected aggregate carrying amount, asset	$ 1,000		$ 10,000