LOANS HELD FOR INVESTMENT - Investment Portfolio (Details) $ in Thousands	1 Months Ended		3 Months Ended
	Mar. 31, 2022 USD ($)	Mar. 31, 2021 loan	Mar. 31, 2022 USD ($) option	Feb. 28, 2022	Dec. 31, 2021 USD ($)	Mar. 07, 2019 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 2,439,373		$ 2,439,373		$ 2,429,112
Loans held for investment	2,421,772		$ 2,421,772		2,414,383
Unleveraged effective yield			5.50%
Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of extension options | option			1
Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of extension options | option			2
Extension period of maturity date			12 months
Mixed-use | CALIFORNIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fixed interest rate			15.00%
Senior Mortgage Loans | TEXAS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan modification agreement, number of new separate notes | loan		2
Senior Mortgage Loans | Industrial | CALIFORNIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	14,300		$ 14,300
Loans held for investment	$ 14,300		$ 14,300
Unleveraged effective yield			0.00%
Senior Mortgage Loans | Industrial | CALIFORNIA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	13.00%		13.00%
Senior Mortgage Loans | Industrial | COLORADO
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 24,600		$ 24,600
Loans held for investment	24,400		$ 24,400
Unleveraged effective yield			8.20%
Senior Mortgage Loans | Mixed-use | TEXAS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	35,800		$ 35,800
Loans held for investment	35,700		$ 35,700
Unleveraged effective yield			4.90%
Senior Mortgage Loans | Mixed-use | CALIFORNIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	57,500		$ 57,500
Loans held for investment	57,400		$ 57,400
Unleveraged effective yield			6.80%
Senior Mortgage Loans | Hotel | NEW YORK
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal						$ 38,600
Senior Mortgage Loans | Residential Condominium | NEW YORK
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal					$ 71,800
Senior Mortgage Loans | LIBOR Plus 3.61%, Due March 2023 | Office | ILLINOIS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	150,500		$ 150,500
Loans held for investment	$ 150,000		$ 150,000
Unleveraged effective yield			5.50%
Senior Mortgage Loans | LIBOR Plus 3.61%, Due March 2023 | Office | ILLINOIS | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.61%		3.61%
Senior Mortgage Loans | LIBOR Plus 3.65%, Due January 2023 | Office | Diversified
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 114,400		$ 114,400
Loans held for investment	$ 114,300		$ 114,300
Unleveraged effective yield			5.70%
Senior Mortgage Loans | LIBOR Plus 3.65%, Due January 2023 | Office | Diversified | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.65%		3.65%
Senior Mortgage Loans | LIBOR Plus 4.55% Due May 2024 | Industrial | ILLINOIS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 86,500		$ 86,500
Loans held for investment	$ 85,900		$ 85,900
Unleveraged effective yield			5.40%
Senior Mortgage Loans | LIBOR Plus 4.55% Due May 2024 | Industrial | ILLINOIS | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	4.55%		4.55%
Senior Mortgage Loans | LIBOR Plus 4.25% Due February 2023 | Mixed-use | FLORIDA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 84,000		$ 84,000
Loans held for investment	$ 84,000		$ 84,000
Unleveraged effective yield			5.70%
Senior Mortgage Loans | LIBOR Plus 4.25% Due February 2023 | Mixed-use | FLORIDA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	4.25%		4.25%
Senior Mortgage Loans | LIBOR Plus 3.50%, Due October 2024 | Office | ARIZONA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 77,400		$ 77,400
Loans held for investment	$ 76,600		$ 76,600
Unleveraged effective yield			4.30%
Senior Mortgage Loans | LIBOR Plus 3.50%, Due October 2024 | Office | ARIZONA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.50%		3.50%
Senior Mortgage Loans | LIBOR Plus 3.65%, Due July 2024 | Mixed-use | NEW YORK
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 75,000		$ 75,000
Loans held for investment	$ 74,400		$ 74,400
Unleveraged effective yield			4.50%
Senior Mortgage Loans | LIBOR Plus 3.65%, Due July 2024 | Mixed-use | NEW YORK | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.65%		3.65%
Senior Mortgage Loans | LIBOR Plus 4.25%, Due March 2023 | Office | NORTH CAROLINA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 69,500		$ 69,500
Loans held for investment	$ 69,300		$ 69,300
Unleveraged effective yield			7.00%
Senior Mortgage Loans | LIBOR Plus 4.25%, Due March 2023 | Office | NORTH CAROLINA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	4.25%		4.25%
Senior Mortgage Loans | LIBOR Plus 3.45%, Due May 2022 | Hotel | OREGON / WASHINGTON
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 68,100		$ 68,100
Loans held for investment	$ 67,900		$ 67,900
Unleveraged effective yield			7.40%
Senior Mortgage Loans | LIBOR Plus 3.45%, Due May 2022 | Hotel | OREGON / WASHINGTON | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.45%		3.45%
Senior Mortgage Loans | LIBOR Plus 5.25%, Due July 2023 | Residential Condominium | FLORIDA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 68,000		$ 68,000
Loans held for investment	$ 67,500		$ 67,500
Unleveraged effective yield			6.30%
Senior Mortgage Loans | LIBOR Plus 5.25%, Due July 2023 | Residential Condominium | FLORIDA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	5.25%		5.25%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due November 2024 | Multifamily and Office | SOUTH CAROLINA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 67,000		$ 67,000
Loans held for investment	$ 66,700		$ 66,700
Unleveraged effective yield			3.60%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due November 2024 | Multifamily and Office | SOUTH CAROLINA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.90%		2.90%
Senior Mortgage Loans | LIBOR Plus 2.85%, Due December 2024 | Multifamily | TEXAS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 66,200		$ 66,200
Loans held for investment	$ 65,600		$ 65,600
Unleveraged effective yield			3.70%
Senior Mortgage Loans | LIBOR Plus 2.85%, Due December 2024 | Multifamily | TEXAS | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.85%		2.85%
Senior Mortgage Loans | LIBOR Plus 3.55%, Due August 2024 | Office | NORTH CAROLINA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 64,800		$ 64,800
Loans held for investment	$ 64,100		$ 64,100
Unleveraged effective yield			4.50%
Extension option period exercised (in years)	1 year
Senior Mortgage Loans | LIBOR Plus 3.55%, Due August 2024 | Office | NORTH CAROLINA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.55%		3.55%
Senior Mortgage Loans | LIBOR Plus 3.85%, Due August 2025 | Office | NEW YORK
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 62,700		$ 62,700
Loans held for investment	$ 62,000		$ 62,000
Unleveraged effective yield			4.60%
Senior Mortgage Loans | LIBOR Plus 3.85%, Due August 2025 | Office | NEW YORK | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.85%		3.85%
Senior Mortgage Loans | SOFR Plus 8.95%, Due October 2023 | Residential Condominium | NEW YORK
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 61,800		$ 61,800
Loans held for investment	$ 60,900		$ 60,900
Unleveraged effective yield			11.40%
Senior Mortgage Loans | SOFR Plus 8.95%, Due October 2023 | Residential Condominium | NEW YORK | SOFR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	8.95%		8.95%
Senior Mortgage Loans | LIBOR Plus 3.75%, Due December 2022 | Office | ILLINOIS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 61,000		$ 61,000
Loans held for investment	$ 60,900		$ 60,900
Unleveraged effective yield			5.30%
Senior Mortgage Loans | LIBOR Plus 3.75%, Due December 2022 | Office | ILLINOIS | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.75%		3.75%
Senior Mortgage Loans | LIBOR Plus 3.60%, Due September 2022 | Hotel | Diversified
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 60,400		$ 60,400
Loans held for investment	$ 60,300		$ 60,300
Unleveraged effective yield			6.00%
Senior Mortgage Loans | LIBOR Plus 3.60%, Due September 2022 | Hotel | Diversified | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.60%		3.60%
Senior Mortgage Loans | LIBOR Plus 3.95%, Due Jun 2022 | Office | ILLINOIS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 57,000		$ 57,000
Loans held for investment	$ 57,000		$ 57,000
Unleveraged effective yield			6.20%
Senior Mortgage Loans | LIBOR Plus 3.95%, Due Jun 2022 | Office | ILLINOIS | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.95%		3.95%
Senior Mortgage Loans | LIBOR Plus 3.80%, Due February 2024 | Self Storage | NEW JERSEY
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 55,500		$ 55,500
Loans held for investment	$ 55,600		$ 55,600
Unleveraged effective yield			4.20%
Senior Mortgage Loans | LIBOR Plus 3.80%, Due February 2024 | Self Storage | NEW JERSEY | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.80%		3.80%
Senior Mortgage Loans | LIBOR Plus 3.05%, Due December 2022 | Office | GEORGIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 47,300		$ 47,300
Loans held for investment	$ 47,100		$ 47,100
Unleveraged effective yield			5.70%
Senior Mortgage Loans | LIBOR Plus 3.05%, Due December 2022 | Office | GEORGIA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.05%		3.05%
Senior Mortgage Loans | LIBOR Plus 4 Point 12 Percent, Due January 2023 | Hotel | CALIFORNIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 40,000		$ 40,000
Loans held for investment	$ 39,800		$ 39,800
Basis spread on variable rate	4.12%		4.12%
Unleveraged effective yield			6.00%
Senior Mortgage Loans | LIBOR Plus 4.20%, Due March 2025 | Hotel | CALIFORNIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 38,900		$ 38,900
Loans held for investment	$ 38,300		$ 38,300
Unleveraged effective yield			5.10%
Senior Mortgage Loans | LIBOR Plus 4.20%, Due March 2025 | Hotel | CALIFORNIA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	4.20%		4.20%
Senior Mortgage Loans | LIBOR Plus 4.10%, Due March 2023 | Mixed-use | CALIFORNIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 37,900		$ 37,900
Loans held for investment	$ 37,800		$ 37,800
Unleveraged effective yield			6.30%
Senior Mortgage Loans | LIBOR Plus 4.10%, Due March 2023 | Mixed-use | CALIFORNIA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	4.10%		4.10%
Senior Mortgage Loans | LIBOR Plus 2.75%, Due June 2023 | Multifamily | SOUTH CAROLINA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 37,500		$ 37,500
Loans held for investment	$ 37,300		$ 37,300
Unleveraged effective yield			3.60%
Senior Mortgage Loans | LIBOR Plus 2.75%, Due June 2023 | Multifamily | SOUTH CAROLINA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.75%		2.75%
Senior Mortgage Loans | LIBOR Plus 3.95%, Due July 2022 | Student Housing | CALIFORNIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 35,900		$ 35,900
Loans held for investment	$ 35,900		$ 35,900
Unleveraged effective yield			4.40%
Senior Mortgage Loans | LIBOR Plus 3.95%, Due July 2022 | Student Housing | CALIFORNIA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.95%		3.95%
Senior Mortgage Loans | SOFR Plus 4.00%, Due May 2024 | Hotel | ILLINOIS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 35,000		$ 35,000
Loans held for investment	$ 30,500		$ 30,500
Unleveraged effective yield			0.00%
Senior Mortgage Loans | SOFR Plus 4.00%, Due May 2024 | Hotel | ILLINOIS | SOFR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	4.00%		4.00%
Senior Mortgage Loans | LIBOR Plus 6.50%, Due September 2022 | Multifamily | SOUTH CAROLINA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 34,000		$ 34,000
Loans held for investment	$ 33,900		$ 33,900
Unleveraged effective yield			10.20%
Senior Mortgage Loans | LIBOR Plus 6.50%, Due September 2022 | Multifamily | SOUTH CAROLINA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	6.50%		6.50%
Senior Mortgage Loans | LIBOR Plus 3.95%, Due July 2022, Instrument 2 | Hotel | MICHIGAN
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 33,200		$ 33,200
Loans held for investment	$ 33,200		$ 33,200
Unleveraged effective yield			4.50%
Senior Mortgage Loans | LIBOR Plus 3.95%, Due July 2022, Instrument 2 | Hotel | MICHIGAN | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.95%		3.95%
Senior Mortgage Loans | LIBOR Plus 3.35%, Due November 2022 | Office | CALIFORNIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 32,400		$ 32,400
Loans held for investment	$ 32,300		$ 32,300
Unleveraged effective yield			6.00%
Senior Mortgage Loans | LIBOR Plus 3.35%, Due November 2022 | Office | CALIFORNIA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.35%		3.35%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2025 | Multifamily | CALIFORNIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 31,700		$ 31,700
Loans held for investment	$ 31,400		$ 31,400
Unleveraged effective yield			3.60%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2025 | Multifamily | CALIFORNIA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.90%		2.90%
Senior Mortgage Loans | LIBOR Plus 4 Point 40 Percent, Due March 2026 | Hotel | NEW YORK
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 30,700		$ 30,700
Loans held for investment	$ 30,200		$ 30,200
Unleveraged effective yield			5.20%
Senior Mortgage Loans | LIBOR Plus 4 Point 40 Percent, Due March 2026 | Hotel | NEW YORK | SOFR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	4.40%		4.40%
Senior Mortgage Loans | LIBOR Plus 3 Point 00 Percent, Due December 2022 | Multifamily | PENNSYLVANIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 29,300		$ 29,300
Loans held for investment	$ 29,300		$ 29,300
Unleveraged effective yield			4.50%
Senior Mortgage Loans | LIBOR Plus 3 Point 00 Percent, Due December 2022 | Multifamily | PENNSYLVANIA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.00%		3.00%
Senior Mortgage Loans | LIBOR Plus 3.80%, Due January 2023 | Office | ILLINOIS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 28,500		$ 28,500
Loans held for investment	$ 28,400		$ 28,400
Unleveraged effective yield			6.20%
Senior Mortgage Loans | LIBOR Plus 3.80%, Due January 2023 | Office | ILLINOIS | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.80%		3.80%
Senior Mortgage Loans | LIBOR Plus 3.53%, Due May 2023 | Office | NORTH CAROLINA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 28,500		$ 28,500
Loans held for investment	$ 28,200		$ 28,200
Unleveraged effective yield			6.80%
Senior Mortgage Loans | LIBOR Plus 3.53%, Due May 2023 | Office | NORTH CAROLINA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.53%		3.53%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2025, Instrument 2 | Industrial | FLORIDA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 25,500		$ 25,500
Loans held for investment	$ 25,300		$ 25,300
Unleveraged effective yield			3.60%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2025, Instrument 2 | Industrial | FLORIDA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.90%		2.90%
Senior Mortgage Loans | LIBOR Plus 3.75%, Due May 2024 | Industrial | NEW JERSEY
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 23,300		$ 23,300
Loans held for investment	$ 23,000		$ 23,000
Unleveraged effective yield			4.80%
Senior Mortgage Loans | LIBOR Plus 3.75%, Due May 2024 | Industrial | NEW JERSEY | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.75%		3.75%
Senior Mortgage Loans | LIBOR Plus 2 .90%, Due November 2025 | Industrial | WASHINGTON
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 23,100		$ 23,100
Loans held for investment	$ 23,000		$ 23,000
Unleveraged effective yield			3.50%
Senior Mortgage Loans | LIBOR Plus 2 .90%, Due November 2025 | Industrial | WASHINGTON | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.90%		2.90%
Senior Mortgage Loans | LIBOR Plus 3.40%, Due November 2022 | Office | CALIFORNIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 22,900		$ 22,900
Loans held for investment	$ 22,800		$ 22,800
Unleveraged effective yield			6.00%
Senior Mortgage Loans | LIBOR Plus 3.40%, Due November 2022 | Office | CALIFORNIA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.40%		3.40%
Senior Mortgage Loans | LIBOR Plus 3.25%, Due August 2022 | Student Housing | FLORIDA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 22,000		$ 22,000
Loans held for investment	$ 22,000		$ 22,000
Unleveraged effective yield			5.90%
Senior Mortgage Loans | LIBOR Plus 3.25%, Due August 2022 | Student Housing | FLORIDA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.25%		3.25%
Senior Mortgage Loans | LIBOR Plus 2.50%, Due October 2024 | Multifamily | TEXAS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 21,900		$ 21,900
Loans held for investment	$ 21,700		$ 21,700
Unleveraged effective yield			3.30%
Senior Mortgage Loans | LIBOR Plus 2.50%, Due October 2024 | Multifamily | TEXAS | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.50%		2.50%
Senior Mortgage Loans | LIBOR Plus 3.75%, Due March 2023 | Industrial | CALIFORNIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 19,600		$ 19,600
Loans held for investment	$ 19,500		$ 19,500
Unleveraged effective yield			6.30%
Senior Mortgage Loans | LIBOR Plus 3.75%, Due March 2023 | Industrial | CALIFORNIA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.75%		3.75%
Senior Mortgage Loans | LIBOR Plus 3.85%, Due May 2024 | Industrial | ALABAMA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 19,500		$ 19,500
Loans held for investment	$ 19,400		$ 19,400
Unleveraged effective yield			4.70%
Senior Mortgage Loans | LIBOR Plus 3.85%, Due May 2024 | Industrial | ALABAMA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.85%		3.85%
Senior Mortgage Loans | LIBOR Plus 3.00%, Due March 2023 | Multifamily | WASHINGTON
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 18,700		$ 18,700
Loans held for investment	$ 18,600		$ 18,600
Unleveraged effective yield			5.10%
Senior Mortgage Loans | LIBOR Plus 3.00%, Due March 2023 | Multifamily | WASHINGTON | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.00%		3.00%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2025, Instrument 3 | Self Storage | PENNSYLVANIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 17,200		$ 17,200
Loans held for investment	$ 17,000		$ 17,000
Unleveraged effective yield			4.20%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2025, Instrument 3 | Self Storage | PENNSYLVANIA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.90%		2.90%
Senior Mortgage Loans | LIBOR Plus 3.05%, Due October 2024, Instrument 5 | Self Storage | PENNSYLVANIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 12,800		$ 12,800
Loans held for investment	12,700		$ 12,700
Fixed interest rate			3.05%
Unleveraged effective yield			4.30%
Senior Mortgage Loans | LIBOR Plus 3.05%, Due October 2024, Instrument 1 | Self Storage | MARYLAND
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	12,500		$ 12,500
Loans held for investment	$ 12,400		$ 12,400
Unleveraged effective yield			4.30%
Senior Mortgage Loans | LIBOR Plus 3.05%, Due October 2024, Instrument 1 | Self Storage | MARYLAND | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.05%		3.05%
Senior Mortgage Loans | LIBOR Plus 3.05%, Due October 2024, Instrument 2 | Self Storage | MARYLAND
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 12,100		$ 12,100
Loans held for investment	$ 12,000		$ 12,000
Unleveraged effective yield			4.30%
Senior Mortgage Loans | LIBOR Plus 3.05%, Due October 2024, Instrument 2 | Self Storage | MARYLAND | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.05%		3.05%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2023, Instrument 1 | Self Storage | FLORIDA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 10,800		$ 10,800
Loans held for investment	$ 10,800		$ 10,800
Unleveraged effective yield			4.40%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2023, Instrument 1 | Self Storage | FLORIDA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.90%		2.90%
Senior Mortgage Loans | LIBOR Plus 5.25%, Due December 2024 | Industrial | TEXAS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 10,400		$ 10,400
Loans held for investment	$ 10,300		$ 10,300
Unleveraged effective yield			6.10%
Senior Mortgage Loans | LIBOR Plus 5.25%, Due December 2024 | Industrial | TEXAS | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	5.25%		5.25%
Senior Mortgage Loans | LIBOR Plus 3.05%, Due October 2024, Instrument 3 | Self Storage | WASHINGTON
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 10,200		$ 10,200
Loans held for investment	$ 10,200		$ 10,200
Unleveraged effective yield			4.30%
Senior Mortgage Loans | LIBOR Plus 3.05%, Due October 2024, Instrument 3 | Self Storage | WASHINGTON | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.05%		3.05%
Senior Mortgage Loans | LIBOR Plus 4.00%, Due November 2022 | Office | NORTH CAROLINA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 9,400		$ 9,400
Loans held for investment	$ 9,400		$ 9,400
Unleveraged effective yield			6.60%
Senior Mortgage Loans | LIBOR Plus 4.00%, Due November 2022 | Office | NORTH CAROLINA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	4.00%		4.00%
Senior Mortgage Loans | LIBOR Plus 3.05%, Due October 2024, Instrument 4 | Self Storage | MISSOURI
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 8,900		$ 8,900
Loans held for investment	$ 8,800		$ 8,800
Unleveraged effective yield			4.30%
Senior Mortgage Loans | LIBOR Plus 3.05%, Due October 2024, Instrument 4 | Self Storage | MISSOURI | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.05%		3.05%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due May 2024, Instrument 1 | Self Storage | ARIZONA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 8,500		$ 8,500
Loans held for investment	$ 8,500		$ 8,500
Unleveraged effective yield			4.00%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due May 2024, Instrument 1 | Self Storage | ARIZONA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.90%		2.90%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2024 | Self Storage | MASSACHUSETTS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 8,500		$ 8,500
Loans held for investment	$ 8,500		$ 8,500
Unleveraged effective yield			3.90%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2024 | Self Storage | MASSACHUSETTS | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.90%		2.90%
Senior Mortgage Loans | LIBOR Plus 5.50%, Due September 2024 | Industrial | PENNSYLVANIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 8,000		$ 8,000
Loans held for investment	$ 8,000		$ 8,000
Unleveraged effective yield			6.30%
Senior Mortgage Loans | LIBOR Plus 5.50%, Due September 2024 | Industrial | PENNSYLVANIA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	5.50%		5.50%
Senior Mortgage Loans | LIBOR Plus 5.90%, Due November 2024 | Industrial | FLORIDA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 7,800		$ 7,800
Loans held for investment	$ 7,700		$ 7,700
Unleveraged effective yield			6.80%
Senior Mortgage Loans | LIBOR Plus 5.90%, Due November 2024 | Industrial | FLORIDA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	5.90%		5.90%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due May 2024, Instrument 2 | Self Storage | ARIZONA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 7,400		$ 7,400
Loans held for investment	$ 7,300		$ 7,300
Unleveraged effective yield			4.10%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due May 2024, Instrument 2 | Self Storage | ARIZONA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.90%		2.90%
Senior Mortgage Loans | LIBOR Plus 5.90%, Due November 2024, Instrument 2 | Industrial | PENNSYLVANIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 7,000		$ 7,000
Loans held for investment	$ 6,900		$ 6,900
Unleveraged effective yield			6.70%
Senior Mortgage Loans | LIBOR Plus 5.90%, Due November 2024, Instrument 2 | Industrial | PENNSYLVANIA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	5.90%		5.90%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2023, Instrument 2 | Self Storage | FLORIDA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 7,000		$ 7,000
Loans held for investment	$ 6,900		$ 6,900
Unleveraged effective yield			4.30%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2023, Instrument 2 | Self Storage | FLORIDA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.90%		2.90%
Senior Mortgage Loans | LIBOR Plus 5.50%, Due November 2024 | Industrial | TENNESSEE
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 6,700		$ 6,700
Loans held for investment	$ 6,600		$ 6,600
Unleveraged effective yield			6.30%
Senior Mortgage Loans | LIBOR Plus 5.50%, Due November 2024 | Industrial | TENNESSEE | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	5.50%		5.50%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2023, Instrument 3 | Self Storage | FLORIDA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 6,400		$ 6,400
Loans held for investment	$ 6,400		$ 6,400
Unleveraged effective yield			4.30%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2023, Instrument 3 | Self Storage | FLORIDA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.90%		2.90%
Senior Mortgage Loans | LIBOR Plus 3.00%, Due December 2023, Instrument 1 | Self Storage | MISSOURI
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 6,200		$ 6,200
Loans held for investment	$ 6,200		$ 6,200
Unleveraged effective yield			4.40%
Senior Mortgage Loans | LIBOR Plus 3.00%, Due December 2023, Instrument 1 | Self Storage | MISSOURI | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.00%		3.00%
Senior Mortgage Loans | SOFR Plus 5.90%, Due February 2025 | Industrial | FLORIDA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 5,900		$ 5,900
Loans held for investment	$ 5,900		$ 5,900
Unleveraged effective yield			6.60%
Senior Mortgage Loans | SOFR Plus 5.90%, Due February 2025 | Industrial | FLORIDA | SOFR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	5.90%		5.90%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2023, Instrument 4 | Self Storage | NEW JERSEY
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 5,900		$ 5,900
Loans held for investment	$ 5,900		$ 5,900
Unleveraged effective yield			4.20%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2023, Instrument 4 | Self Storage | NEW JERSEY | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.90%		2.90%
Senior Mortgage Loans | LIBOR Plus 3.00%, Due December 2023, Instrument 2 | Self Storage | ILLINOIS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 5,600		$ 5,600
Loans held for investment	$ 5,600		$ 5,600
Unleveraged effective yield			4.30%
Senior Mortgage Loans | LIBOR Plus 3.00%, Due December 2023, Instrument 2 | Self Storage | ILLINOIS | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	3.00%		3.00%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due July 2024 | Self Storage | WISCONSIN
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 5,400		$ 5,400
Loans held for investment	$ 5,400		$ 5,400
Unleveraged effective yield			3.90%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due July 2024 | Self Storage | WISCONSIN | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.90%		2.90%
Senior Mortgage Loans | SOFR Plus 5.75%, Due March 2025 | Industrial | FLORIDA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 4,700		$ 4,700
Loans held for investment	$ 4,600		$ 4,600
Unleveraged effective yield			6.40%
Senior Mortgage Loans | SOFR Plus 5.75%, Due March 2025 | Industrial | FLORIDA | SOFR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	5.75%		5.75%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2023, Instrument 5 | Self Storage | FLORIDA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 4,400		$ 4,400
Loans held for investment	$ 4,400		$ 4,400
Unleveraged effective yield			4.20%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due December 2023, Instrument 5 | Self Storage | FLORIDA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.90%		2.90%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due April 2024 | Self Storage | COLORADO
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 3,200		$ 3,200
Loans held for investment	$ 3,200		$ 3,200
Unleveraged effective yield			3.80%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due April 2024 | Self Storage | COLORADO | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.90%		2.90%
Senior Mortgage Loans | LIBOR Plus 6.25%, Due September 2024 | Industrial | COLORADO
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 2,900		$ 2,900
Loans held for investment	$ 2,900		$ 2,900
Unleveraged effective yield			7.10%
Senior Mortgage Loans | LIBOR Plus 6.25%, Due September 2024 | Industrial | COLORADO | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	6.25%		6.25%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due September 2024 | Self Storage | TEXAS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 2,900		$ 2,900
Loans held for investment	$ 2,900		$ 2,900
Unleveraged effective yield			3.90%
Senior Mortgage Loans | LIBOR Plus 2.90%, Due September 2024 | Self Storage | TEXAS | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	2.90%		2.90%
Senior Mortgage Loans | LIBOR Plus 5.90%, Due October 2024 | Industrial | ARIZONA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 2,700		$ 2,700
Loans held for investment	$ 2,600		$ 2,600
Unleveraged effective yield			6.70%
Senior Mortgage Loans | LIBOR Plus 5.90%, Due October 2024 | Industrial | ARIZONA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	5.90%		5.90%
Senior Mortgage Loans | LIBOR Plus 5.25%, Due September 2024 | Industrial | GEORGIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 1,300		$ 1,300
Loans held for investment	$ 1,300		$ 1,300
Unleveraged effective yield			6.10%
Senior Mortgage Loans | LIBOR Plus 5.25%, Due September 2024 | Industrial | GEORGIA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	5.25%		5.25%
Senior Mortgage Loans | LIBOR Plus 10.00%, Note B | TEXAS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 400		$ 400
Basis spread on variable rate	1000.00%		1000.00%
Senior Mortgage Loans | LIBOR Plus 3.80% Due January 2024 | Mixed-use | CALIFORNIA | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 45,000		$ 45,000
Basis spread on variable rate	380.00%		380.00%
Senior Mortgage Loans | LIBOR Plus 3.75%, Note A | TEXAS
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 35,300		$ 35,300
Basis spread on variable rate	375.00%		375.00%
Senior Mortgage Loans | Mezzanine, Annual Fixed Rate, 15% Loan | Mixed-use | CALIFORNIA
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 12,500		$ 12,500
Senior Mortgage Loans | LIBOR Plus 4 Point 40 Percent, Due September 2022 | Hotel | ILLINOIS | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate				4.40%
Senior Mortgage Loans | LIBOR Plus 6.75%, Due February 2023 | Industrial | COLORADO
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loans held for investment	$ 20,800		$ 20,800
Senior Mortgage Loans | LIBOR Plus 6.75%, Due February 2023 | Industrial | COLORADO | LIBOR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	6.75%		6.75%
Senior Mortgage Loans | SOFR Plus 8.50%, Due February 2023 | Industrial | COLORADO
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loans held for investment	$ 3,800		$ 3,800
Senior Mortgage Loans | SOFR Plus 8.50%, Due February 2023 | Industrial | COLORADO | SOFR
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Basis spread on variable rate	8.50%		8.50%
Subordinated debt and preferred equity investments | Office | NEW JERSEY
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding principal	$ 17,400		$ 17,400
Loans held for investment	$ 16,800		$ 16,800
Fixed interest rate			12.00%
Unleveraged effective yield			13.70%