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Includes income (loss) from mortgage banking servicing real estate mortgages, net of subservicing costs, and market valuation changes of MSRs held at fair value.

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Number Of Investments Made

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Number Of Partnerships Consolidated

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Servicing Asset At Fair Value, Unpaid Principal Balance On Underlying Loans

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Amount of assets pledged to secure a debt instrument.

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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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Sum of the carrying amounts as of the balance sheet date of all investments.

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Amount of revenue and income classified as other.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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Amount of unrealized gain (loss) on investment.

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Other Investments - Additional Information (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023 USD ($) partnership investment	Mar. 31, 2022 USD ($)	Dec. 31, 2018 partnership	Dec. 31, 2022 USD ($)
Net Investment Income [Line Items]
Number of partnerships consolidated \| partnership	2		2
Collateral amounts	$ 1,414,099			$ 1,379,856
Investment fair value changes, net	(127)	$ (6,120)
Investments	6,000
Other income, net	4,556	5,983
Interest income	178,516	189,400
MSR income, net	1,077	$ 4,303
Strategic investments
Net Investment Income [Line Items]
Investment fair value changes, net	0
Other income, net	$ (20)
Strategic investments \| RWT Horizons
Net Investment Income [Line Items]
Number of investments made \| investment	31
Investments	$ 23,000
Strategic investments \| Churchill Finance
Net Investment Income [Line Items]
Number of investments made \| investment	6,000
MSRs
Net Investment Income [Line Items]
Mortgage servicing rights	$ 24,831			25,421
Aggregate principal balance	2,150,000			2,190,000
Servicer advance financing
Net Investment Income [Line Items]
Collateral amounts	233,000
Equity investment income	5,000
Investment fair value changes, net	(1,000)
Held-for-sale residential loans
Net Investment Income [Line Items]
Mortgage servicing rights	260,378			269,259
Servicing asset, unpaid principal balance on underlying loan	11,060,000
Excess MSRs
Net Investment Income [Line Items]
Mortgage servicing rights	38,807			$ 39,035
Investment fair value changes, net	(200)
Interest income	4,000
Fair value option elected aggregate carrying amount, asset	$ 0