Property Portfolio - Gross Investment (Details)

v3.20.2

Property Portfolio - Gross Investment (Details) - USD ($) $ in Thousands																						9 Months Ended	12 Months Ended
	Sep. 30, 2020	Sep. 18, 2020	Jul. 31, 2020	Jul. 17, 2020	Jul. 16, 2020	Mar. 20, 2020	Mar. 04, 2020	Feb. 27, 2020	Feb. 13, 2020	Dec. 17, 2019	Nov. 15, 2019	Oct. 31, 2019	Oct. 25, 2019	Oct. 01, 2019	Sep. 26, 2019	Aug. 23, 2019	Aug. 14, 2019	Aug. 06, 2019	Aug. 05, 2019	Aug. 01, 2019	Jul. 12, 2019	Sep. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Beginning Balance																						$ 905,529	$ 647,550
Acquisitions																						155,851	257,979
Capitalized costs	$ 712																					712	1,860
Ending Balance	1,061,380																					1,061,380	905,529
Zachary [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							4,683
Gilbert and Chandler [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							16,259
Las Vegas [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							22,502
Oklahoma Northwest [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							28,207
Mishawaka [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							16,103
Surprise [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							28,682
San Marcos [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																					$ 12,000		11,974
Lansing [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																				$ 11,100			11,368
Bannockburn [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																			$ 6,800				6,977
Aurora [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																		$ 12,600					12,557
Livonia [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																	$ 10,400						10,592
Gilbert [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																$ 5,600							5,592
Morgantown [Member]
Property, Plant and Equipment [Line Items]
Acquisitions															$ 8,000								7,950
Beaumont [Member]
Property, Plant and Equipment [Line Items]
Acquisitions														$ 33,700									33,739
Bastrop [Member]
Property, Plant and Equipment [Line Items]
Acquisitions													$ 12,100										12,065
Panama City [Member]
Property, Plant and Equipment [Line Items]
Acquisitions												$ 13,000											12,976
Jacksonville [Member]
Property, Plant and Equipment [Line Items]
Acquisitions											$ 8,900												8,869
Greenwood [Member]
Property, Plant and Equipment [Line Items]
Acquisitions										$ 5,800													5,848
Asc 842 Reclassification [Member]
Property, Plant and Equipment [Line Items]
ASC Topic 842 Reclassification																							(824)
High Point Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions									$ 25,100													25,081
Clinton Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions								$ 11,600														11,619
West Allis Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions							$ 9,100															9,357
Grand Rapids Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions						$ 22,700																22,790
Dumfries [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						22,040
Centerville Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions					$ 5,100																	5,071
Fairfax Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions				$ 17,900																		19,745
Rosedale Facilities [Member]
Property, Plant and Equipment [Line Items]
Acquisitions			$ 23,100																			23,891
Lancaster Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions		$ 6,300																				6,305
Winston-Salem Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions	8,500																					9,240
Land [Member]
Property, Plant and Equipment [Line Items]
Beginning Balance																						95,381	63,710
Acquisitions																						20,742	31,671
Capitalized costs	4																					4	0
Ending Balance	116,123																					116,123	95,381
Land [Member] | Zachary [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							0
Land [Member] | Gilbert and Chandler [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							4,616
Land [Member] | Las Vegas [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							2,479
Land [Member] | Oklahoma Northwest [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							2,364
Land [Member] | Mishawaka [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							1,924
Land [Member] | Surprise [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							1,738
Land [Member] | San Marcos [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							2,322
Land [Member] | Lansing [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							1,202
Land [Member] | Bannockburn [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							763
Land [Member] | Aurora [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							1,521
Land [Member] | Livonia [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							980
Land [Member] | Gilbert [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							2,408
Land [Member] | Morgantown [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							883
Land [Member] | Beaumont [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							3,022
Land [Member] | Bastrop [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							1,975
Land [Member] | Panama City [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							1,559
Land [Member] | Jacksonville [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							1,023
Land [Member] | Greenwood [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							892
Land [Member] | Asc 842 Reclassification [Member]
Property, Plant and Equipment [Line Items]
ASC Topic 842 Reclassification																							0
Land [Member] | High Point Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						1,749
Land [Member] | Clinton Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						664
Land [Member] | West Allis Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						974
Land [Member] | Grand Rapids Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						2,947
Land [Member] | Dumfries [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						2,597
Land [Member] | Fairfax Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						6,731
Land [Member] | Rosedale Facilities [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						2,856
Land [Member] | Lancaster Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						696
Land [Member] | Winston-Salem Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						1,524
Building [Member]
Property, Plant and Equipment [Line Items]
Beginning Balance																						693,533	518,451
Acquisitions																						100,026	175,082
Capitalized costs	309																					309	1,179
Ending Balance	793,559																					793,559	693,533
Building [Member] | Zachary [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							3,336
Building [Member] | Gilbert and Chandler [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							11,643
Building [Member] | Las Vegas [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							15,277
Building [Member] | Oklahoma Northwest [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							19,501
Building [Member] | Mishawaka [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							10,084
Building [Member] | Surprise [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							18,737
Building [Member] | San Marcos [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							6,934
Building [Member] | Lansing [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							7,681
Building [Member] | Bannockburn [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							3,566
Building [Member] | Aurora [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							7,446
Building [Member] | Livonia [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							7,629
Building [Member] | Gilbert [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							2,027
Building [Member] | Morgantown [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							5,286
Building [Member] | Beaumont [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							24,836
Building [Member] | Bastrop [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							8,436
Building [Member] | Panama City [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							8,682
Building [Member] | Jacksonville [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							7,846
Building [Member] | Greenwood [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							4,956
Building [Member] | Asc 842 Reclassification [Member]
Property, Plant and Equipment [Line Items]
ASC Topic 842 Reclassification																							0
Building [Member] | High Point Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						20,367
Building [Member] | Clinton Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						6,551
Building [Member] | West Allis Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						7,687
Building [Member] | Grand Rapids Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						17,341
Building [Member] | Dumfries [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						10,047
Building [Member] | Centerville Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						4,202
Building [Member] | Fairfax Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						6,642
Building [Member] | Rosedale Facilities [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						16,204
Building [Member] | Lancaster Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						4,269
Building [Member] | Winston-Salem Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						6,407
Site Improvements [Member]
Property, Plant and Equipment [Line Items]
Beginning Balance																						9,912	6,880
Acquisitions																						3,356	3,032
Capitalized costs	206																					206	170
Ending Balance	13,268																					13,268	9,912
Site Improvements [Member] | Zachary [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							103
Site Improvements [Member] | Gilbert and Chandler [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							0
Site Improvements [Member] | Las Vegas [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							244
Site Improvements [Member] | Oklahoma Northwest [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							143
Site Improvements [Member] | Mishawaka [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							74
Site Improvements [Member] | Surprise [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							228
Site Improvements [Member] | San Marcos [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							126
Site Improvements [Member] | Lansing [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							185
Site Improvements [Member] | Bannockburn [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							132
Site Improvements [Member] | Aurora [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							308
Site Improvements [Member] | Livonia [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							201
Site Improvements [Member] | Gilbert [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							62
Site Improvements [Member] | Morgantown [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							373
Site Improvements [Member] | Beaumont [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							399
Site Improvements [Member] | Bastrop [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							64
Site Improvements [Member] | Panama City [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							220
Site Improvements [Member] | Jacksonville [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							0
Site Improvements [Member] | Greenwood [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							0
Site Improvements [Member] | Asc 842 Reclassification [Member]
Property, Plant and Equipment [Line Items]
ASC Topic 842 Reclassification																							0
Site Improvements [Member] | High Point Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						440
Site Improvements [Member] | Clinton Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						342
Site Improvements [Member] | West Allis Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						137
Site Improvements [Member] | Grand Rapids Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						470
Site Improvements [Member] | Dumfries [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						289
Site Improvements [Member] | Centerville Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						160
Site Improvements [Member] | Fairfax Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						381
Site Improvements [Member] | Rosedale Facilities [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						567
Site Improvements [Member] | Lancaster Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						110
Site Improvements [Member] | Winston-Salem Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						254
Tenant improvements [Member]
Property, Plant and Equipment [Line Items]
Beginning Balance																						33,909	15,357
Acquisitions																						13,056	18,552
Capitalized costs	193																					193	511
Ending Balance	46,965																					46,965	33,909
Tenant improvements [Member] | Zachary [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							409
Tenant improvements [Member] | Las Vegas [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							2,205
Tenant improvements [Member] | Oklahoma Northwest [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							3,044
Tenant improvements [Member] | Mishawaka [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							1,798
Tenant improvements [Member] | Surprise [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							4,119
Tenant improvements [Member] | San Marcos [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							404
Tenant improvements [Member] | Lansing [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							667
Tenant improvements [Member] | Bannockburn [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							1,134
Tenant improvements [Member] | Aurora [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							603
Tenant improvements [Member] | Livonia [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							442
Tenant improvements [Member] | Gilbert [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							362
Tenant improvements [Member] | Morgantown [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							506
Tenant improvements [Member] | Beaumont [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							1,036
Tenant improvements [Member] | Bastrop [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							276
Tenant improvements [Member] | Panama City [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							1,036
Tenant improvements [Member] | High Point Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						869
Tenant improvements [Member] | Clinton Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						1,578
Tenant improvements [Member] | West Allis Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						98
Tenant improvements [Member] | Grand Rapids Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						450
Tenant improvements [Member] | Dumfries [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						4,815
Tenant improvements [Member] | Centerville Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						208
Tenant improvements [Member] | Fairfax Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						2,979
Tenant improvements [Member] | Rosedale Facilities [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						1,443
Tenant improvements [Member] | Lancaster Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						116
Tenant improvements [Member] | Winston-Salem Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						307
Intangibles [Member]
Property, Plant and Equipment [Line Items]
Beginning Balance																						72,794	43,152
Acquisitions																						18,671	29,642
Capitalized costs																							0
Ending Balance	$ 91,465																					91,465	72,794
Intangibles [Member] | Zachary [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							835
Intangibles [Member] | Gilbert and Chandler [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							0
Intangibles [Member] | Las Vegas [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							2,297
Intangibles [Member] | Oklahoma Northwest [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							3,155
Intangibles [Member] | Mishawaka [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							2,223
Intangibles [Member] | Surprise [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							3,860
Intangibles [Member] | San Marcos [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							2,188
Intangibles [Member] | Lansing [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							1,633
Intangibles [Member] | Bannockburn [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							1,382
Intangibles [Member] | Aurora [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							2,679
Intangibles [Member] | Livonia [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							1,340
Intangibles [Member] | Gilbert [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							733
Intangibles [Member] | Morgantown [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							902
Intangibles [Member] | Beaumont [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							4,446
Intangibles [Member] | Bastrop [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							1,314
Intangibles [Member] | Panama City [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							1,479
Intangibles [Member] | Jacksonville [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							0
Intangibles [Member] | Greenwood [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																							0
Intangibles [Member] | Asc 842 Reclassification [Member]
Property, Plant and Equipment [Line Items]
ASC Topic 842 Reclassification																							$ (824)
Intangibles [Member] | High Point Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						1,656
Intangibles [Member] | Clinton Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						2,484
Intangibles [Member] | West Allis Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						461
Intangibles [Member] | Grand Rapids Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						1,582
Intangibles [Member] | Dumfries [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						4,292
Intangibles [Member] | Centerville Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						501
Intangibles [Member] | Fairfax Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						3,012
Intangibles [Member] | Rosedale Facilities [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						2,821
Intangibles [Member] | Lancaster Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						1,114
Intangibles [Member] | Winston-Salem Facility [Member]
Property, Plant and Equipment [Line Items]
Acquisitions																						$ 748