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Subsequent Events - Narrative (Details) - USD ($) $ in Thousands		1 Months Ended	9 Months Ended
	Oct. 01, 2022	Oct. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Subsequent Event [Line Items]
Modified loan balance			$ 2,016,704	$ 1,813,209
Short term extension with lender regarding loan secured			126,313
Cross Creek Mall
Subsequent Event [Line Items]
Short term extension with lender regarding loan secured			98,662
Southpark Mall
Subsequent Event [Line Items]
Modified loan balance			$ 54,417
Debt instrument, maturity date			Jun. 30, 2022
Subsequent Event
Subsequent Event [Line Items]
Modified loan balance	$ 150,880
Subsequent Event | Greenbrier Mall
Subsequent Event [Line Items]
Secured loan foreclosed by lender		$ 61,647
Subsequent Event | The Outlet Shoppes at Gettysburg
Subsequent Event [Line Items]
Modified loan balance		21,000
Subsequent Event | Cross Creek Mall
Subsequent Event [Line Items]
Short term extension with lender regarding loan secured		$ 98,662
Debt instrument, maturity date	Jan. 05, 2023	Jan. 05, 2023
Subsequent Event | Southpark Mall
Subsequent Event [Line Items]
Short term extension with lender regarding loan secured		$ 54,417
Subsequent Event | Jefferson Mall, Louisville, KY
Subsequent Event [Line Items]
Short term extension with lender regarding loan secured		56,638
Subsequent Event | U.S Treasury Securities
Subsequent Event [Line Items]
U.S. treasury securities redeemed		49,959
Purchases of U.S. treasury securities		$ 90,251
Debt instrument, maturity date		Apr. 30, 2023

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