Investments in Real Estate-Related Securities (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Principal Balance	$ 3,971	$ 841
Unamortized Premium (Discount)	246	20
Amortized Cost	4,217	861
Unrealized Gain (Loss), Net	10	5
Fair Value	4,227	866
Equity securities	$ 500	$ 11
Equity securities, weighted average yield	6.64%	6.52%
Non-agency CMBS
Debt Instrument [Line Items]
Principal Balance	$ 2,846	$ 716
Unamortized Premium (Discount)	152	11
Amortized Cost	2,998	727
Unrealized Gain (Loss), Net	3	2
Fair Value	$ 3,001	$ 729
Period-end Weighted Average Yield	2.52%	3.39%
Corporate debt
Debt Instrument [Line Items]
Principal Balance	$ 1,125	$ 125
Unamortized Premium (Discount)	94	9
Amortized Cost	1,219	134
Unrealized Gain (Loss), Net	7	3
Fair Value	$ 1,226	$ 137
Period-end Weighted Average Yield	1.90%	2.55%