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Other Assets and Liabilities - Additional Information (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2018 USD ($) property	Dec. 31, 2018 USD ($) property	Dec. 31, 2017 USD ($) property
Other Assets and Other Liabilities [Line Items]
Investment receivable, real estate securities sales	$ 5,000	$ 5,000
Real estate owned (REO)	3,943	3,943	$ 3,354
Amount related to transfers into REO		4,000
REO liquidations		4,000
Unrealized gain on REO from market value adjustments		500
Payable to minority partner	14,331	$ 14,331	$ 0
Co-investors losses (less than)	$ 100
Legacy Sequoia
Other Assets and Other Liabilities [Line Items]
Number of REO properties recorded on balance sheet | property	13	13	14

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Accrued Investment Income Receivable, Real Estate Securities Sales

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Other Assets and Other Liabilities [Line Items]

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Carrying amount of the equity interests owned by noncontrolling partners of a limited partnership included in the entity's consolidated financial statements.

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Aggregate amount of net income allocated to limited partners.

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The number of real estate properties owned as of the balance sheet date.

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Amount of realized and unrealized gain (loss), from the firm's direct investment activity, conducted separately from customer trading activities, and includes, but is not limited to, investments in private equity, alternative investment products, real estate, and exchanges and memberships.

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Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

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