Schedule IV - Real Estate Mortgage Loans (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Monthly Debt Service	$ 2,684
Face Value	486,200
Net Book Value	486,200	$ 552,797	$ 642,218	$ 427,117
Prior Liens	$ 1,018,440
Mezzanine Loans | Multiple
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of RE Assets | loan	154
Interest Rate	6.53%
Maturity Date	Jun. 09, 2022
Monthly Debt Service	$ 2,684
Face Value	486,200
Net Book Value	486,200
Prior Liens	$ 1,018,440