Investments in Real Estate - Schedule of Acquired Properties (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Real Estate [Line Items]
Initial Cost Basis	$ 611,800	$ 703,843
Land	50,822	54,478
Building and Improvements	513,210	590,973
Lease in-place Value Intangible	$ 47,768	61,847
Below Market Lease Intangible		$ (3,455)
Lease in-place Value Intangible
Real Estate [Line Items]
Weighted-average life of intangible assets (years)	8 years 8 months 12 days	8 years 4 months 24 days
Below Market Lease Intangible
Real Estate [Line Items]
Weighted-average life of intangible assets (years)		8 years
Chicago, Illinois \| Industrial Property \| Chicago, IL Industrial Property Expiring Nov 2029
Real Estate [Line Items]
Initial Cost Basis	$ 53,642
Land	3,681
Building and Improvements	45,817
Lease in-place Value Intangible	4,144
Chicago, Illinois \| Industrial Property \| Chicago, IL Industrial Property Expiring Dec 2029
Real Estate [Line Items]
Initial Cost Basis	39,153
Land	1,788
Building and Improvements	34,301
Lease in-place Value Intangible	3,064
Chicago, Illinois \| Industrial Property \| Chicago, IL, Industrial Property, Expiring Sept 2029
Real Estate [Line Items]
Initial Cost Basis		$ 49,348
Land		3,432
Building and Improvements		40,947
Lease in-place Value Intangible		4,969
Below Market Lease Intangible		0
Phoenix, Arizona \| Industrial Property \| Phoenix, AZ, Industrial Property, Expiring Dec 2025
Real Estate [Line Items]
Initial Cost Basis	19,164
Land	1,614
Building and Improvements	16,222
Lease in-place Value Intangible	1,328
Phoenix, Arizona \| Industrial Property \| Phoenix, AZ Industrial Property Expiring Mar 2033
Real Estate [Line Items]
Initial Cost Basis	87,820
Land	10,733
Building and Improvements	69,491
Lease in-place Value Intangible	7,596
Phoenix, Arizona \| Industrial Property \| Phoenix, AZ, Industrial Property, Expiring Sept 2026
Real Estate [Line Items]
Initial Cost Basis		21,020
Land		3,311
Building and Improvements		16,013
Lease in-place Value Intangible		1,696
Below Market Lease Intangible		0
Phoenix, Arizona \| Industrial Property \| Phoenix, AZ, Industrial Property, Expiring Sept 2030
Real Estate [Line Items]
Initial Cost Basis		67,079
Land		11,970
Building and Improvements		48,924
Lease in-place Value Intangible		6,185
Below Market Lease Intangible		0
Dallas, Texas \| Industrial Property \| Dallas, TX Property Expiring Aug 2029
Real Estate [Line Items]
Initial Cost Basis	83,495
Land	4,500
Building and Improvements	71,635
Lease in-place Value Intangible	7,360
Dallas, Texas \| Industrial Property \| Dallas, TX, Industrial Property Expiring June 2030
Real Estate [Line Items]
Initial Cost Basis	10,731
Land	1,308
Building and Improvements	8,466
Lease in-place Value Intangible	957
Dallas, Texas \| Industrial Property \| Dallas, TX, Industrial Property, Expiring Oct 2024
Real Estate [Line Items]
Initial Cost Basis	44,030
Land	3,938
Building and Improvements	37,185
Lease in-place Value Intangible	2,907
Dallas, Texas \| Industrial Property \| Dallas, TX, Industrial Property Expiring Jan 2030
Real Estate [Line Items]
Initial Cost Basis	31,556
Land	3,847
Building and Improvements	25,038
Lease in-place Value Intangible	2,671
Dallas, Texas \| Industrial Property \| Dallas, TX Industrial Property Expiring Aug 2023
Real Estate [Line Items]
Initial Cost Basis		28,201
Land		2,420
Building and Improvements		23,330
Lease in-place Value Intangible		2,451
Below Market Lease Intangible		0
Savannah, Georgia \| Industrial Property \| Savannah, GA, Industrial Property Expiring July 2027
Real Estate [Line Items]
Initial Cost Basis	34,753
Land	1,689
Building and Improvements	30,346
Lease in-place Value Intangible	2,718
Savannah, Georgia \| Industrial Property \| Savannah, GA, Industrial Property Expiring June 2025
Real Estate [Line Items]
Initial Cost Basis	30,448
Land	2,560
Building and Improvements	25,697
Lease in-place Value Intangible	2,191
Savannah, Georgia \| Industrial Property \| Savannah, GA, Industrial Property, Expiring Aug 2025
Real Estate [Line Items]
Initial Cost Basis	9,130
Land	1,070
Building and Improvements	7,448
Lease in-place Value Intangible	612
Savannah, Georgia \| Industrial Property \| Savanna, GA, Industrial Property, Expiring July 2026
Real Estate [Line Items]
Initial Cost Basis	40,908
Land	3,775
Building and Improvements	34,322
Lease in-place Value Intangible	2,811
Houston, Texas \| Industrial Property \| Houston, Texas, Industrial Property, Expiring April 2025
Real Estate [Line Items]
Initial Cost Basis	20,949
Land	2,202
Building and Improvements	17,101
Lease in-place Value Intangible	1,646
Ocala, Florida \| Industrial Property \| Ocala, FL, Industrial Property, Expiring July 2030
Real Estate [Line Items]
Initial Cost Basis	58,283
Land	4,113
Building and Improvements	49,904
Lease in-place Value Intangible	4,266
DC/Baltimore, Maryland \| Industrial Property \| DC/Baltimore, MD, Industrial Property, Expiring Nov 2024
Real Estate [Line Items]
Initial Cost Basis	29,143
Land	2,818
Building and Improvements	24,423
Lease in-place Value Intangible	1,902
Greenville/Spartanburg, South Carolina \| Industrial Property \| Greenville/Spartanburg, SC, Industrial Property, Expiring Feb 2031
Real Estate [Line Items]
Initial Cost Basis	18,595
Land	1,186
Building and Improvements	15,814
Lease in-place Value Intangible	$ 1,595
Greenville/Spartanburg, South Carolina \| Industrial Property \| Greenville/Spartanburg, SC Property Expiring Jan 2024
Real Estate [Line Items]
Initial Cost Basis		33,253
Land		1,615
Building and Improvements		27,829
Lease in-place Value Intangible		3,809
Below Market Lease Intangible		0
Greenville/Spartanburg, South Carolina \| Industrial Property \| Greenville/Spartanburg, SC, Industrial Property, Expiring Jan 2024
Real Estate [Line Items]
Initial Cost Basis		16,817
Land		1,406
Building and Improvements		14,272
Lease in-place Value Intangible		1,139
Below Market Lease Intangible		0
Greenville/Spartanburg, South Carolina \| Industrial Property \| Greenville/Spartanburg, SC, Industrial Property, Expiring April 2025
Real Estate [Line Items]
Initial Cost Basis		15,583
Land		1,257
Building and Improvements		13,252
Lease in-place Value Intangible		1,074
Below Market Lease Intangible		0
Greenville/Spartanburg, South Carolina \| Industrial Property \| Greenville/Spartanburg, SC, Industrial Property, Expiring Dec 2034
Real Estate [Line Items]
Initial Cost Basis		94,233
Land		6,959
Building and Improvements		78,364
Lease in-place Value Intangible		8,910
Below Market Lease Intangible		0
Indianapolis, Indiana \| Industrial Property \| Indianapolis, Indiana, Industrial Property Expiring July 2025
Real Estate [Line Items]
Initial Cost Basis		20,809
Land		1,954
Building and Improvements		16,820
Lease in-place Value Intangible		2,035
Below Market Lease Intangible		0
Atlanta, Georgia \| Industrial Property \| Atlanta, Georgia, Industrial Property Expiring Oct 2023
Real Estate [Line Items]
Initial Cost Basis		37,182
Land		3,253
Building and Improvements		30,951
Lease in-place Value Intangible		2,978
Below Market Lease Intangible		0
Atlanta, Georgia \| Industrial Property \| Atlanta, GA Industrial Property Expiring May 2020
Real Estate [Line Items]
Initial Cost Basis		45,441
Land		3,251
Building and Improvements		40,023
Lease in-place Value Intangible		2,167
Below Market Lease Intangible		0
Atlanta, Georgia \| Industrial Property \| Atlanta, GA Industrial Property Expiring May 2024
Real Estate [Line Items]
Initial Cost Basis		27,353
Land		2,536
Building and Improvements		22,825
Lease in-place Value Intangible		1,992
Below Market Lease Intangible		0
Memphis, Tennessee \| Industrial Property \| Memphis, Tennessee Industrial Property Expiring April 2024
Real Estate [Line Items]
Initial Cost Basis		49,395
Land		2,646
Building and Improvements		40,452
Lease in-place Value Intangible		6,297
Below Market Lease Intangible		0
Memphis, Tennessee \| Industrial Property \| Memphis, Tennessee property Expiring May 2023
Real Estate [Line Items]
Initial Cost Basis		18,316
Land		851
Building and Improvements		15,465
Lease in-place Value Intangible		2,000
Below Market Lease Intangible		0
Cincinnati, Ohio \| Industrial Property \| Cincinnati, OH, Industrial Property, Expiring Dec 2023
Real Estate [Line Items]
Initial Cost Basis		13,762
Land		544
Building and Improvements		12,376
Lease in-place Value Intangible		842
Below Market Lease Intangible		0
Cincinnati, Ohio \| Industrial Property \| Cincinnati, OH, Industrial Property, Expiring June 2030
Real Estate [Line Items]
Initial Cost Basis		100,288
Land		3,950
Building and Improvements		88,427
Lease in-place Value Intangible		7,911
Below Market Lease Intangible		0
Cincinnati, Ohio \| Industrial Property \| Cincinnati, OH, Industrial Property, Expiring Aug 2027
Real Estate [Line Items]
Initial Cost Basis		65,763
Land		3,123
Building and Improvements		60,703
Lease in-place Value Intangible		5,392
Below Market Lease Intangible		$ (3,455)

Investment Building and Building Improvements Acquired During Period

No definition available.

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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- Definition

Amount before amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life.

+ References

No definition available.

+ Details

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477

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- Definition

This element represents the amount of value allocated by a lessor (acquirer) to lease agreements which exist at acquisition of a leased property. Such amount may include the value assigned to existing tenant relationships and excludes the market adjustment component of the value assigned for above or below-market leases acquired.

+ References

No definition available.

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- Definition

Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.13)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=121566466&loc=d3e6812-107765

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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