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Other Investments - Summary of Other Investments (Details) - USD ($) $ in Thousands		Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Net Investment Income [Line Items]
Servicing asset, fair value		$ 282,743	$ 151,582
Other Investments	[1]	446,220	358,130
Residential Loans
Net Investment Income [Line Items]
Servicing asset, fair value		298,946	169,204
Excess MSRs
Net Investment Income [Line Items]
Servicing asset, fair value		31,788	31,814
Shared home appreciation options
Net Investment Income [Line Items]
Shared home appreciation options		40,642	45,085
Mortgage servicing rights
Net Investment Income [Line Items]
Servicing asset, fair value		23,616	42,224	$ 55,284	$ 60,281
Investment in multifamily loan fund
Net Investment Income [Line Items]
Shared home appreciation options		15,731	39,802
Other
Net Investment Income [Line Items]
Shared home appreciation options		$ 35,497	$ 30,001
[1] Our consolidated balance sheets include assets of consolidated variable interest entities (“VIEs”) that can only be used to settle obligations of these VIEs and liabilities of consolidated VIEs for which creditors do not have recourse to Redwood Trust, Inc. or its affiliates. At March 31, 2020 and December 31, 2019, assets of consolidated VIEs totaled $7,470,706 and $11,931,869, respectively. At March 31, 2020 and December 31, 2019, liabilities of consolidated VIEs totaled $6,759,260 and $10,717,072, respectively. See Note 4 for further discussion.

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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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