Investments in Real Estate - Summary of Wholly Owned Industrial Properties Acquired (Details) $ in Thousands																																						12 Months Ended
	Dec. 27, 2021 USD ($) a ft² property	Dec. 23, 2021 USD ($) ft² a property	Dec. 15, 2021 USD ($) ft² a property	Dec. 13, 2021 USD ($) a ft² property	Dec. 10, 2021 USD ($) ft² a property	Nov. 30, 2021 USD ($) a ft² property	Nov. 23, 2021 USD ($) a ft² property	Nov. 18, 2021 USD ($) a ft² property	Oct. 29, 2021 USD ($) ft² a property	Oct. 20, 2021 USD ($) ft² a property	Oct. 15, 2021 USD ($) a ft² property	Oct. 12, 2021 USD ($) ft² a property	Oct. 01, 2021 USD ($) ft² a property	Sep. 30, 2021 USD ($) a ft² property	Sep. 27, 2021 USD ($) a ft² property	Aug. 27, 2021 USD ($) ft² a property	Aug. 26, 2021 USD ($) ft² a property	Aug. 11, 2021 USD ($) ft² a property	Jul. 30, 2021 USD ($) ft² a property	Jul. 14, 2021 USD ($) a ft² property	Jun. 14, 2021 USD ($) a ft² property	May 12, 2021 USD ($) a ft² property	Apr. 22, 2021 USD ($) a ft² property	Apr. 13, 2021 USD ($) a ft² property	Apr. 06, 2021 USD ($) ft² a property	Mar. 31, 2021 USD ($) ft² a property	Mar. 17, 2021 USD ($) ft² a property	Feb. 25, 2021 USD ($) ft² a property	Jan. 13, 2021 USD ($) a ft² building	Dec. 30, 2020 USD ($) ft² building	Dec. 05, 2020 USD ($) ft² building	Nov. 05, 2020 USD ($) ft² building	Oct. 26, 2020 USD ($) ft² building	Jul. 10, 2020 USD ($) ft² building	May 31, 2020 USD ($) ft² building	Apr. 17, 2020 USD ($) ft² building	Mar. 12, 2020 USD ($) ft² building	Dec. 31, 2021 USD ($) a ft² property	Dec. 31, 2020 USD ($) ft² building	Nov. 06, 2020 ft² building
Real Estate Properties
Number of properties (property) | property																																						253
Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Area of real estate property																																						1,895,024
Asset acquisition, consideration transferred | $																																						$ 657,345
Area of land | a																																						52.5
Asset Acquisitions 2020 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | building																																							6
Area of real estate property																																							163,794
Asset acquisition, consideration transferred | $																																							$ 96,657
Area of land																																							12.0
256 Paterson Plank | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | building																													1
Area of real estate property																													16,159
Asset acquisition, consideration transferred | $																													$ 10,625
Area of land | a																													0
117th Place NE | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																												1
Area of real estate property																												126,721
Asset acquisition, consideration transferred | $																												$ 33,750
Area of land | a																												0
Countyline #24 & #25 | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																											2
Area of real estate property																											273,577
Asset acquisition, consideration transferred | $																											$ 48,114
Area of land | a																											0
Edison | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																										3
Area of real estate property																										112,392
Asset acquisition, consideration transferred | $																										$ 17,600
Area of land | a																										0
73rd Street | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																									0
Area of real estate property																									0
Asset acquisition, consideration transferred | $																									$ 5,800
Area of land | a																									5.8
68th Kent | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																								2
Area of real estate property																								67,120
Asset acquisition, consideration transferred | $																								$ 10,000
Area of land | a																								0
East Gish | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																							0
Area of real estate property																							0
Asset acquisition, consideration transferred | $																							$ 8,004
Area of land | a																							2.2
Gramercy Place | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																						1
Area of real estate property																						17,407
Asset acquisition, consideration transferred | $																						$ 6,290
Area of land | a																						0
Occidental Avenue | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																						3
Area of real estate property																						51,853
Asset acquisition, consideration transferred | $																						$ 16,450
Area of land | a																						0
SW 16th Street | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																					0
Area of real estate property																					0
Asset acquisition, consideration transferred | $																					$ 7,615
Area of land | a																					2.9
Countyline #26 | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																				1
Area of real estate property																				220,942
Asset acquisition, consideration transferred | $																				$ 39,409
Area of land | a																				0
13020 & 13030 Cerise | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																				2
Area of real estate property																				21,846
Asset acquisition, consideration transferred | $																				$ 8,075
Area of land | a																				0
1150 & 1250 W. Trenton Ave | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																			2
Area of real estate property																			34,224
Asset acquisition, consideration transferred | $																			$ 9,335
Area of land | a																			0
MLK 9801 | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																		0
Area of real estate property																		0
Asset acquisition, consideration transferred | $																		$ 11,900
Area of land | a																		3.1
MLK 9845 | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																		0
Area of real estate property																		0
Asset acquisition, consideration transferred | $																		$ 15,750
Area of land | a																		3.4
MLK 9600 | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																		0
Area of real estate property																		0
Asset acquisition, consideration transferred | $																		$ 22,350
Area of land | a																		5.2
Foley Street | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																	2
Area of real estate property																	40,504
Asset acquisition, consideration transferred | $																	$ 8,250
Area of land | a																	0
Paterson Plank III | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property																0
Area of real estate property																0
Asset acquisition, consideration transferred | $																$ 17,850
Area of land | a																4.9
97 Third Street | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property															0
Area of real estate property															0
Asset acquisition, consideration transferred | $															$ 26,250
Area of land | a															5.4
13025 Cerise | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property														1
Area of real estate property														21,000
Asset acquisition, consideration transferred | $														$ 7,875
Area of land | a														0
Woodinville | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property													1
Area of real estate property													84,238
Asset acquisition, consideration transferred | $													$ 23,600
Area of land | a													0
190 Morgan | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property												1
Area of real estate property												11,881
Asset acquisition, consideration transferred | $												$ 4,450
Area of land | a												0
San Pedro | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property											0
Area of real estate property											0
Asset acquisition, consideration transferred | $											$ 8,800
Area of land | a											2.0
228 North Avenue | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property										1
Area of real estate property										30,978
Asset acquisition, consideration transferred | $										$ 44,000
Area of land | a										0
Pickett | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property									1
Area of real estate property									27,683
Asset acquisition, consideration transferred | $									$ 9,000
Area of land | a									0
Berryessa | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property									0
Area of real estate property									0
Asset acquisition, consideration transferred | $									$ 23,000
Area of land | a									7.2
768 772 Ceres | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property								2
Area of real estate property								16,887
Asset acquisition, consideration transferred | $								$ 7,661
Area of land | a								0
Tuxedo | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property							0
Area of real estate property							0
Asset acquisition, consideration transferred | $							$ 8,000
Area of land | a							2.9
Maple II | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property						0
Area of real estate property						0
Asset acquisition, consideration transferred | $						$ 13,800
Area of land | a						2.3
Eisenhower | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property					3
Area of real estate property					199,396
Asset acquisition, consideration transferred | $					$ 60,750
Area of land | a					0
4501 46th Street | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property				0
Area of real estate property				0
Asset acquisition, consideration transferred | $				$ 11,850
Area of land | a				4.4
Countyline #27 & #28 | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property			2
Area of real estate property			401,906
Asset acquisition, consideration transferred | $			$ 74,142
Area of land | a			0
Woodinville II | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property		2
Area of real estate property		118,310
Asset acquisition, consideration transferred | $		$ 33,500
Area of land | a		0
Willows | Asset Acquisitions 2021 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | property	0
Area of real estate property	0
Asset acquisition, consideration transferred | $	$ 3,500
Area of land | a	0.8
Old Bayshore | Asset Acquisitions 2020 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | building																																					0
Area of real estate property																																					0
Asset acquisition, consideration transferred | $																																					$ 11,784
Area of land																																					2.7
Gladwick | Asset Acquisitions 2020 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | building																																					1
Area of real estate property																																					65,670
Asset acquisition, consideration transferred | $																																					$ 17,950
Area of land																																					0
84th Kent | Asset Acquisitions 2020 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | building																																				0
Area of real estate property																																				0
Asset acquisition, consideration transferred | $																																				$ 4,500
Area of land																																				2.8
Hudson | Asset Acquisitions 2020 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | building																																			1
Area of real estate property																																			13,000
Asset acquisition, consideration transferred | $																																			$ 5,611
Area of land																																			0
Starlite Street | Asset Acquisitions 2020 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | building																																		1
Area of real estate property																																		22,275
Asset acquisition, consideration transferred | $																																		$ 6,300
Area of land																																		0
Aviation Blvd | Asset Acquisitions 2020 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | building																																	0
Area of real estate property																																	0
Asset acquisition, consideration transferred | $																																	$ 10,000
Area of land																																	1.9
Porter Street | Asset Acquisitions 2020 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | building																																1
Area of real estate property																																12,618
Asset acquisition, consideration transferred | $																																$ 4,400
Area of land																																0
SE 32nd Street | Asset Acquisitions 2020 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | building																																								1
Area of real estate property																																								38,883
Asset acquisition, consideration transferred | $																															$ 11,737
Area of land																																								0
Maple Street | Asset Acquisitions 2020 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | building																															0
Area of real estate property																															0
Asset acquisition, consideration transferred | $																															$ 9,750
Area of land																															2.5
E. Marginal | Asset Acquisitions 2020 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | building																														0
Area of real estate property																														0
Asset acquisition, consideration transferred | $																														$ 6,625
Area of land																														2.1
McLaren | Asset Acquisitions 2020 | Wholly Owned Properties
Real Estate Properties
Number of properties (property) | building																														1
Area of real estate property																														11,348
Asset acquisition, consideration transferred | $																														$ 8,000
Area of land																														0