Real Estate Investments - Dispositions (Details) $ in Thousands								6 Months Ended
	Jun. 30, 2023 USD ($) ft² property	May 12, 2023 USD ($) ft² a	Mar. 30, 2023 USD ($) ft²	Mar. 23, 2023 USD ($) ft²	Feb. 10, 2023 USD ($) ft²	Jan. 30, 2023 USD ($) ft²	Jan. 12, 2023 USD ($) ft² property disposition_transaction	Jun. 30, 2023 USD ($) ft² property	Aug. 02, 2023 USD ($) ft²
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property	680							680
Real Estate Dispositions
Real Estate Dispositions [Line Items]
SALE PRICE	$ 222,110							$ 222,110
CLOSING ADJUSTMENTS	(16,202)							(16,202)
COMPANY-FINANCED MORTGAGE NOTES	(45,000)							(45,000)
NET PROCEEDS								160,908
NET REAL ESTATE INVESTMENT	221,801							221,801
OTHER (INCLUDING RECEIVABLES)	$ (2,636)							(2,636)
GAIN/(IMPAIRMENT)								$ (13,257)
SQUARE FOOTAGE | ft²	492,341							492,341
Tampa Fl & Miami FL
Real Estate Dispositions [Line Items]
SALE PRICE							$ 93,250
CLOSING ADJUSTMENTS							(5,875)
COMPANY-FINANCED MORTGAGE NOTES							0
NET PROCEEDS							87,375
NET REAL ESTATE INVESTMENT							87,302
OTHER (INCLUDING RECEIVABLES)							(888)
GAIN/(IMPAIRMENT)							$ 961
SQUARE FOOTAGE | ft²							224,037
Number of owned real estate properties | property							2
Number of property dispositions | disposition_transaction							2
Dallas, TX
Real Estate Dispositions [Line Items]
SALE PRICE						$ 19,210
CLOSING ADJUSTMENTS						(141)
COMPANY-FINANCED MORTGAGE NOTES						0
NET PROCEEDS						19,069
NET REAL ESTATE INVESTMENT						18,986
OTHER (INCLUDING RECEIVABLES)						43
GAIN/(IMPAIRMENT)						$ 40
SQUARE FOOTAGE | ft²						36,691
Joint venture, ownership (in percentage)						40.00%
St. Louis, MO
Real Estate Dispositions [Line Items]
SALE PRICE					$ 350
CLOSING ADJUSTMENTS					(18)
COMPANY-FINANCED MORTGAGE NOTES					0
NET PROCEEDS					332
NET REAL ESTATE INVESTMENT					398
OTHER (INCLUDING RECEIVABLES)					0
GAIN/(IMPAIRMENT)					$ (66)
SQUARE FOOTAGE | ft²					6,500
Los Angeles, CA
Real Estate Dispositions [Line Items]
SALE PRICE		$ 3,300	$ 75,000	$ 21,000
CLOSING ADJUSTMENTS		(334)	(8,079)	(526)
COMPANY-FINANCED MORTGAGE NOTES		0	(45,000)	0
NET PROCEEDS		2,966	21,921	20,474
NET REAL ESTATE INVESTMENT		3,268	88,624	20,610
OTHER (INCLUDING RECEIVABLES)		0	(803)	52
GAIN/(IMPAIRMENT)		$ (302)	$ (20,900)	$ (188)
SQUARE FOOTAGE | ft²		0	147,078	37,165
Mortgage note			$ 45,000
Albany, NY
Real Estate Dispositions [Line Items]
SALE PRICE	$ 10,000							$ 10,000
CLOSING ADJUSTMENTS	(1,229)							(1,229)
COMPANY-FINANCED MORTGAGE NOTES	0							0
NET PROCEEDS	8,771
NET REAL ESTATE INVESTMENT	2,613							2,613
OTHER (INCLUDING RECEIVABLES)	(1,040)							$ (1,040)
GAIN/(IMPAIRMENT)	$ 7,198
SQUARE FOOTAGE | ft²	40,870							40,870
Area of land | a		0.34
Houston, TX | Subsequent event
Real Estate Dispositions [Line Items]
SALE PRICE									$ 8,320
SQUARE FOOTAGE | ft²									57,170