Acquisitions, Dispositions and Mortgage Repayments - Dispositions (Details) $ in Thousands																																															12 Months Ended
	Dec. 27, 2024 USD ($) ft²	Dec. 20, 2024 USD ($) ft²	Dec. 18, 2024 USD ($) ft²	Dec. 12, 2024 USD ($) ft² property	Dec. 10, 2024 USD ($) ft²	Oct. 25, 2024 USD ($) ft² property	Oct. 24, 2024 USD ($) ft²	Oct. 15, 2024 USD ($) ft²	Oct. 09, 2024 USD ($) ft²	Oct. 03, 2024 USD ($) ft²	Sep. 26, 2024 USD ($) ft²	Sep. 13, 2024 USD ($) ft²	Aug. 27, 2024 USD ($) ft² property	Aug. 23, 2024 USD ($) ft²	Aug. 13, 2024 USD ($) ft²	Aug. 06, 2024 USD ($) ft²	Aug. 02, 2024 USD ($) ft²	Jun. 28, 2024 USD ($) ft²	Jun. 21, 2024 USD ($) ft²	Jun. 06, 2024 USD ($) ft²	May 30, 2024 USD ($) ft²	May 23, 2024 USD ($) ft²	May 20, 2024 USD ($) ft²	Dec. 29, 2023 USD ($) ft² disposition_transaction property	Dec. 28, 2023 USD ($) ft²	Dec. 27, 2023 USD ($) ft²	Dec. 22, 2023 USD ($) ft² disposition_transaction property	Dec. 21, 2023 USD ($) ft²	Dec. 20, 2023 USD ($) ft²	Dec. 15, 2023 USD ($) ft²	Dec. 01, 2023 USD ($) ft²	Nov. 13, 2023 USD ($) ft² property disposition_transaction	Sep. 27, 2023 USD ($) ft²	Sep. 18, 2023 USD ($) ft²	Sep. 15, 2023 USD ($) ft²	Aug. 22, 2023 USD ($) ft²	Aug. 02, 2023 USD ($) ft²	Jun. 30, 2023 USD ($) ft²	May 12, 2023 USD ($) a ft²	Mar. 30, 2023 USD ($) ft²	Mar. 23, 2023 USD ($) ft²	Feb. 10, 2023 USD ($) ft²	Jan. 30, 2023 USD ($) ft²	Jan. 12, 2023 USD ($) ft² disposition_transaction property	Apr. 12, 2021 USD ($) ft²	Apr. 01, 2021 USD ($) ft²	Dec. 31, 2024 USD ($) ft² property	Dec. 31, 2023 USD ($) ft²
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property				3																																											589
Corporate Joint Venture
Real Estate Dispositions [Line Items]
NET CONSIDERATION										$ 9,600			$ 148,900									$ 584,900
Joint venture, ownership (in percentage)													20.00%																																		20.00%
Albany, NY
Real Estate Dispositions [Line Items]
SALE PRICE								$ 9,500									$ 6,300																					$ 10,000								$ 725
CLOSING COSTS & CREDITS								(521)									(847)																					(1,229)								(60)
COMPANY-FINANCED NOTES								0									0																					0								0
NET CONSIDERATION								8,979									5,453																					8,771								665
NET REAL ESTATE INVESTMENT								7,823									5,528																					2,613								765
OTHER								1,193									486																					(1,040)								(82)
GAIN/(IMPAIR-MENT)								$ (37)									$ (561)																					$ 7,198								$ (18)
SQUARE FOOTAGE | ft²								80,676									180,000																					40,870								14,800
San Angelo, TX
Real Estate Dispositions [Line Items]
SALE PRICE																																													$ 5,085
CLOSING COSTS & CREDITS																																													(128)
COMPANY-FINANCED NOTES																																													0
NET CONSIDERATION																																													4,957
NET REAL ESTATE INVESTMENT																																													4,917
OTHER																																													66
GAIN/(IMPAIR-MENT)																																													$ (26)
SQUARE FOOTAGE | ft²																																													24,580
Houston, TX
Real Estate Dispositions [Line Items]
SALE PRICE										12,000													$ 250								$ 4,100			$ 250			$ 8,320
CLOSING COSTS & CREDITS										(1,001)													(9)								(6)			(24)			(285)
COMPANY-FINANCED NOTES										(9,630)													0								0			0			0
NET CONSIDERATION										1,369													241								4,094			226			8,035
NET REAL ESTATE INVESTMENT										11,266													713								3,486			1,998			4,567
OTHER										295													(520)								0			0			194
GAIN/(IMPAIR-MENT)										$ (563)													$ 48								$ 608			$ (1,772)			$ 3,274
SQUARE FOOTAGE | ft²										140,012													37,040								83,223			52,040			57,170
Multiple
Real Estate Dispositions [Line Items]
SALE PRICE			$ 310,250										$ 177,250	$ 118,000								284,348
CLOSING COSTS & CREDITS			(6,767)										(7,085)	(8,615)								(14,270)
COMPANY-FINANCED NOTES			0										0	0								0
NET CONSIDERATION			303,483										170,165	109,385								270,078
NET REAL ESTATE INVESTMENT			321,437										169,545	113,956								254,176
OTHER			6,616										5,363	548								25,836
GAIN/(IMPAIR-MENT)			$ (24,570)										$ (4,743)	$ (5,119)								$ (9,934)
SQUARE FOOTAGE | ft²			766,622										473,003	266,782								556,274
Denver, CO
Real Estate Dispositions [Line Items]
SALE PRICE																					$ 19,000
CLOSING COSTS & CREDITS																					(628)
COMPANY-FINANCED NOTES																					0
NET CONSIDERATION																					18,372
NET REAL ESTATE INVESTMENT																					18,522
OTHER																					165
GAIN/(IMPAIR-MENT)																					$ (315)
SQUARE FOOTAGE | ft²																					37,130
Denver, CO | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property													2																																		1
Austin, TX
Real Estate Dispositions [Line Items]
SALE PRICE												$ 42,281								$ 54,858
CLOSING COSTS & CREDITS												(1,257)								(1,575)
COMPANY-FINANCED NOTES												0								0
NET CONSIDERATION												41,024								53,283
NET REAL ESTATE INVESTMENT												14,561								27,964
OTHER												425								623
GAIN/(IMPAIR-MENT)												$ 26,038								$ 24,696
SQUARE FOOTAGE | ft²												76,246								129,879
Austin, TX | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property																																															1
Minneapolis, MN
Real Estate Dispositions [Line Items]
SALE PRICE																			$ 1,082
CLOSING COSTS & CREDITS																			(144)
COMPANY-FINANCED NOTES																			0
NET CONSIDERATION																			938
NET REAL ESTATE INVESTMENT																			303
OTHER																			43
GAIN/(IMPAIR-MENT)																			$ 592
SQUARE FOOTAGE | ft²																			50,291
Raleigh, NC
Real Estate Dispositions [Line Items]
SALE PRICE																		$ 99,518
CLOSING COSTS & CREDITS																		(2,835)
COMPANY-FINANCED NOTES																		0
NET CONSIDERATION																		96,683
NET REAL ESTATE INVESTMENT																		86,810
OTHER																		906
GAIN/(IMPAIR-MENT)																		$ 8,967
SQUARE FOOTAGE | ft²																		309,424
Charlotte, NC
Real Estate Dispositions [Line Items]
SALE PRICE																$ 26,670
CLOSING COSTS & CREDITS																(395)
COMPANY-FINANCED NOTES																0
NET CONSIDERATION																26,275
NET REAL ESTATE INVESTMENT																14,853
OTHER																613
GAIN/(IMPAIR-MENT)																$ 10,809
SQUARE FOOTAGE | ft²																90,633
Charleston, SC
Real Estate Dispositions [Line Items]
SALE PRICE															$ 14,500															$ 6,200
CLOSING COSTS & CREDITS															(589)															(401)
COMPANY-FINANCED NOTES															0															0
NET CONSIDERATION															13,911															5,799
NET REAL ESTATE INVESTMENT															11,488															3,415
OTHER															1															0
GAIN/(IMPAIR-MENT)															$ 2,422															$ 2,384
SQUARE FOOTAGE | ft²															46,711															15,014
Joint venture, ownership (in percentage)																														100.00%
Raleigh, NC
Real Estate Dispositions [Line Items]
SALE PRICE											$ 1,813
CLOSING COSTS & CREDITS											(27)
COMPANY-FINANCED NOTES											0
NET CONSIDERATION											1,786
NET REAL ESTATE INVESTMENT											1,694
OTHER											50
GAIN/(IMPAIR-MENT)											$ 42
SQUARE FOOTAGE | ft²											5,934
Raleigh, NC | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property																																															1
Greensboro, NC
Real Estate Dispositions [Line Items]
SALE PRICE									$ 12,514
CLOSING COSTS & CREDITS									(21)
COMPANY-FINANCED NOTES									0
NET CONSIDERATION									12,493
NET REAL ESTATE INVESTMENT									10,152
OTHER									296
GAIN/(IMPAIR-MENT)									$ 2,045
SQUARE FOOTAGE | ft²									35,373
Des Moines, IA
Real Estate Dispositions [Line Items]
SALE PRICE								$ 31,750
CLOSING COSTS & CREDITS								(1,320)
COMPANY-FINANCED NOTES								0
NET CONSIDERATION								30,430
NET REAL ESTATE INVESTMENT								13,869
OTHER								1,662
GAIN/(IMPAIR-MENT)								$ 14,899
SQUARE FOOTAGE | ft²								95,486
Salt Lake City, UT
Real Estate Dispositions [Line Items]
SALE PRICE							$ 30,712
CLOSING COSTS & CREDITS							(8,962)
COMPANY-FINANCED NOTES							0
NET CONSIDERATION							21,750
NET REAL ESTATE INVESTMENT							26,899
OTHER							(9,406)
GAIN/(IMPAIR-MENT)							$ 4,257
SQUARE FOOTAGE | ft²							112,192
Joint venture, ownership (in percentage)							63.00%
Miami, FL
Real Estate Dispositions [Line Items]
SALE PRICE						$ 36,789																					$ 18,250
CLOSING COSTS & CREDITS						(706)																					(756)
COMPANY-FINANCED NOTES						0																					0
NET CONSIDERATION						36,083																					17,494
NET REAL ESTATE INVESTMENT						35,925																					17,354
OTHER						(209)																					643
GAIN/(IMPAIR-MENT)						$ 367																					$ (503)
SQUARE FOOTAGE | ft²						102,186																					48,000
Miami, FL | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property																																															1
Miami, FL 2
Real Estate Dispositions [Line Items]
SALE PRICE						$ 17,767
CLOSING COSTS & CREDITS						(718)
COMPANY-FINANCED NOTES						0
NET CONSIDERATION						17,049
NET REAL ESTATE INVESTMENT						14,650
OTHER						(210)
GAIN/(IMPAIR-MENT)						$ 2,609
SQUARE FOOTAGE | ft²						60,761
Number of owned real estate properties | property						2
Cleveland, OH
Real Estate Dispositions [Line Items]
SALE PRICE					$ 1,000
CLOSING COSTS & CREDITS					(157)
COMPANY-FINANCED NOTES					0
NET CONSIDERATION					843
NET REAL ESTATE INVESTMENT					1,454
OTHER					57
GAIN/(IMPAIR-MENT)					$ (668)
SQUARE FOOTAGE | ft²					31,152
Boise, ID
Real Estate Dispositions [Line Items]
SALE PRICE				$ 18,350
CLOSING COSTS & CREDITS				(2,003)
COMPANY-FINANCED NOTES				0
NET CONSIDERATION				16,347
NET REAL ESTATE INVESTMENT				17,562
OTHER				345
GAIN/(IMPAIR-MENT)				$ (1,560)
SQUARE FOOTAGE | ft²				83,078
Atlanta, GA
Real Estate Dispositions [Line Items]
SALE PRICE		$ 15,900																																		$ 25,140
CLOSING COSTS & CREDITS		(1,318)																																		(66)
COMPANY-FINANCED NOTES		0																																		0
NET CONSIDERATION		14,582																																		25,074
NET REAL ESTATE INVESTMENT		13,344																																		23,226
OTHER		635																																		(536)
GAIN/(IMPAIR-MENT)		$ 603																																		$ 2,386
SQUARE FOOTAGE | ft²		42,921																																		55,195
Atlanta, GA | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property													1																																		1
Los Angeles, CA
Real Estate Dispositions [Line Items]
SALE PRICE		$ 64,000																										$ 19,000											$ 3,300	$ 75,000	$ 21,000
CLOSING COSTS & CREDITS		(4,805)																										(1,311)											(334)	(8,079)	(526)
COMPANY-FINANCED NOTES		0																										0											0	(45,000)	0
NET CONSIDERATION		59,195																										17,689											2,966	21,921	20,474
NET REAL ESTATE INVESTMENT		47,322																										17,787											3,268	88,624	20,610
OTHER		1,676																										0											0	(803)	52
GAIN/(IMPAIR-MENT)		$ 10,197																										$ (98)											$ (302)	$ (20,900)	$ (188)
SQUARE FOOTAGE | ft²		162,554																										104,377											0	147,078	37,165
Mortgage Note																																								$ 45,000
Area of land | a																																							0.34
Tampa, FL
Real Estate Dispositions [Line Items]
SALE PRICE	$ 37,500
CLOSING COSTS & CREDITS	(402)
COMPANY-FINANCED NOTES	0
NET CONSIDERATION	37,098
NET REAL ESTATE INVESTMENT	41,556
OTHER	(1,962)
GAIN/(IMPAIR-MENT)	$ (2,496)
SQUARE FOOTAGE | ft²	95,896
Wichita Falls, TX
Real Estate Dispositions [Line Items]
SALE PRICE	$ 600
CLOSING COSTS & CREDITS	(130)
COMPANY-FINANCED NOTES	0
NET CONSIDERATION	470
NET REAL ESTATE INVESTMENT	2,530
OTHER	14
GAIN/(IMPAIR-MENT)	$ (2,074)
SQUARE FOOTAGE | ft²	25,133
Tampa FL & Miami FL
Real Estate Dispositions [Line Items]
SALE PRICE																																												$ 93,250
CLOSING COSTS & CREDITS																																												(5,875)
COMPANY-FINANCED NOTES																																												0
NET CONSIDERATION																																												87,375
NET REAL ESTATE INVESTMENT																																												87,302
OTHER																																												(888)
GAIN/(IMPAIR-MENT)																																												$ 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																													$ 43,295						$ 115,000								$ 19,210
CLOSING COSTS & CREDITS																													(764)						(1,504)								(141)
COMPANY-FINANCED NOTES																													0						0								0
NET CONSIDERATION																													42,531						113,496								19,069
NET REAL ESTATE INVESTMENT																													33,882						64,183								18,986
OTHER																													(3,782)						6,094								43
GAIN/(IMPAIR-MENT)																													$ 12,431						$ 43,219								$ 40
SQUARE FOOTAGE | ft²																													77,827						161,264								36,691
Joint venture, ownership (in percentage)																																											40.00%
Dallas, TX | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property													1
St. Louis, MO
Real Estate Dispositions [Line Items]
SALE PRICE																																										$ 350
CLOSING COSTS & CREDITS																																										(18)
COMPANY-FINANCED NOTES																																										0
NET CONSIDERATION																																										332
NET REAL ESTATE INVESTMENT																																										398
OTHER																																										0
GAIN/(IMPAIR-MENT)																																										$ (66)
SQUARE FOOTAGE | ft²																																										6,500
Chicago, IL
Real Estate Dispositions [Line Items]
SALE PRICE																																	$ 59,950
CLOSING COSTS & CREDITS																																	(870)
COMPANY-FINANCED NOTES																																	0
NET CONSIDERATION																																	59,080
NET REAL ESTATE INVESTMENT																																	74,710
OTHER																																	(380)
GAIN/(IMPAIR-MENT)																																	$ (15,250)
SQUARE FOOTAGE | ft²																																	104,912
Evansville, IN
Real Estate Dispositions [Line Items]
SALE PRICE																																$ 18,500
CLOSING COSTS & CREDITS																																(63)
COMPANY-FINANCED NOTES																																0
NET CONSIDERATION																																18,437
NET REAL ESTATE INVESTMENT																																17,807
OTHER																																(149)
GAIN/(IMPAIR-MENT)																																$ 779
SQUARE FOOTAGE | ft²																																260,520
Number of owned real estate properties | property																																5
Number of property dispositions | disposition_transaction																																3
Tucson, AZ
Real Estate Dispositions [Line Items]
SALE PRICE																											$ 43,230
CLOSING COSTS & CREDITS																											(3,770)
COMPANY-FINANCED NOTES																											(6,000)
NET CONSIDERATION																											33,460
NET REAL ESTATE INVESTMENT																											39,786
OTHER																											(26)
GAIN/(IMPAIR-MENT)																											$ (300)
SQUARE FOOTAGE | ft²																											215,471
Number of owned real estate properties | property																											12
Number of property dispositions | disposition_transaction																											1
Mortgage Note																											$ 6,000
Sebring, FL
Real Estate Dispositions [Line Items]
SALE PRICE																										$ 9,500
CLOSING COSTS & CREDITS																										(81)
COMPANY-FINANCED NOTES																										0
NET CONSIDERATION																										9,419
NET REAL ESTATE INVESTMENT																										10,438
OTHER																										(512)
GAIN/(IMPAIR-MENT)																										$ (507)
SQUARE FOOTAGE | ft²																										38,949
Boston, MA
Real Estate Dispositions [Line Items]
SALE PRICE																									$ 117,197
CLOSING COSTS & CREDITS																									(2,079)
COMPANY-FINANCED NOTES																									0
NET CONSIDERATION																									115,118
NET REAL ESTATE INVESTMENT																									107,803
OTHER																									9,828
GAIN/(IMPAIR-MENT)																									$ (2,513)
SQUARE FOOTAGE | ft²																									161,254
Jacksonville/Orlando/Miami, FL
Real Estate Dispositions [Line Items]
SALE PRICE																								$ 77,000
CLOSING COSTS & CREDITS																								(8,678)
COMPANY-FINANCED NOTES																								(7,700)
NET CONSIDERATION																								60,622
NET REAL ESTATE INVESTMENT																								65,839
OTHER																								(294)
GAIN/(IMPAIR-MENT)																								$ 2,777
SQUARE FOOTAGE | ft²																								354,500
Number of owned real estate properties | property																								3
Number of property dispositions | disposition_transaction																								1
Mortgage Note																								$ 7,700
New York, NY | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property																																															1
Philapelphia, PA | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property																																															1
Memphis, TN | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property																																															1
Indianapolis, IN | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property																																															1
Honolulu, HI | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property																																															1
Nashville, TN | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property													2
San Antonio, TX | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property													1
Medical Office Building | Houston, TX | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property																																															3
Medical Office Building | Los Angeles, CA | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property																																															2
Medical Office Building | Dallas, TX | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property																																															3
Medical Office Building | Seattle, WA | Corporate Joint Venture
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property																																															5
Real Estate Dispositions
Real Estate Dispositions [Line Items]
SALE PRICE																																															$ 1,450,312	$ 787,042
CLOSING COSTS & CREDITS																																															(67,295)	(36,860)
COMPANY-FINANCED NOTES																																															(9,630)	(58,700)
NET CONSIDERATION																																															1,373,387	691,482
NET REAL ESTATE INVESTMENT																																															1,291,584	708,082
OTHER																																															35,525	8,444
GAIN/(IMPAIR-MENT)																																															$ 55,907	$ 33,658
SQUARE FOOTAGE | ft²																																															4,132,769	2,282,057
Real Estate Dispositions | Medical Office Building | Raleigh, NC
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property																																															2
Real Estate Dispositions | Medical Office Building | Greensboro, NC
Real Estate Dispositions [Line Items]
Number of owned real estate properties | property																																															7