Investments in Real Estate - Schedule of Acquired Properties (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Real Estate [Line Items]
Initial Cost Basis	$ 703,843	$ 315,590
Land and Land Estate	54,478	30,630
Building and Improvements	590,973	269,019
Lease in-place Value	61,847	26,598
Below Market Lease	$ (3,455)	$ (10,657)
In-place lease values
Real Estate [Line Items]
Weighted-average life of intangible assets (years)	8 years 4 months 24 days	8 years 4 months 24 days
Leases, Acquired-in-Place, Market Adjustment [Member]
Real Estate [Line Items]
Weighted-average life of intangible assets (years)	8 years	9 years 4 months 24 days
Office Property \| Olive Branch, Mississippi \| Olive Branch, Mississippi, Industrial Property Expiring 2029
Real Estate [Line Items]
Initial Cost Basis		$ 44,090
Land and Land Estate		1,958
Building and Improvements		38,687
Lease in-place Value		3,445
Below Market Lease		0
Office Property \| Spartanburg, South Carolina
Real Estate [Line Items]
Land and Land Estate		1,447
Building and Improvements		23,744
Lease in-place Value		2,441
Below Market Lease		0
Office Property \| Spartanburg, South Carolina \| Spartanburg, SC Property Expiring July 2024
Real Estate [Line Items]
Initial Cost Basis		27,632
Industrial Property \| Olive Branch, Mississippi \| Olive Branch, Mississippi, Industrial Property Expiring 2021
Real Estate [Line Items]
Initial Cost Basis		48,575
Land and Land Estate		2,500
Building and Improvements		42,538
Lease in-place Value		5,151
Below Market Lease		(1,614)
Industrial Property \| Edwardsville, Illinois \| Edwardsville, IL Industrial Property Expiring 2030
Real Estate [Line Items]
Initial Cost Basis		44,178
Land and Land Estate		3,649
Building and Improvements		41,292
Lease in-place Value		3,467
Below Market Lease		(4,230)
Industrial Property \| Pasadena, Texas \| Pasadena, TX Industrial Property Expiring 2023
Real Estate [Line Items]
Initial Cost Basis		23,868
Land and Land Estate		4,057
Building and Improvements		17,810
Lease in-place Value		2,001
Below Market Lease		0
Industrial Property \| Carrollton, Texas \| Carrollton, Texas
Real Estate [Line Items]
Initial Cost Basis		19,564
Land and Land Estate		3,228
Building and Improvements		15,766
Lease in-place Value		1,247
Below Market Lease		(677)
Industrial Property \| Goodyear, Arizona \| Goodyear, Arizona Industrial Property Expiring 2026
Real Estate [Line Items]
Initial Cost Basis		41,372
Land and Land Estate		5,247
Building and Improvements		36,115
Lease in-place Value		2,014
Below Market Lease		(2,004)
Industrial Property \| Chester, Virginia
Real Estate [Line Items]
Land and Land Estate		8,544
Industrial Property \| Chester, Virginia \| Chester, VA Industrial Property Expiring 2030
Real Estate [Line Items]
Initial Cost Basis		66,311
Building and Improvements		53,067
Lease in-place Value		6,832
Below Market Lease		$ (2,132)
Indianapolis, Indiana \| Industrial Property \| Indianapolis, IN, Industrial Property Expiring 2025
Real Estate [Line Items]
Initial Cost Basis	$ 20,809
Land and Land Estate	1,954
Building and Improvements	16,820
Lease in-place Value	2,035
Atlanta, Georgia \| Industrial Property \| Atlanta, GA Property Expiring 2023
Real Estate [Line Items]
Initial Cost Basis	37,182
Land and Land Estate	3,253
Building and Improvements	30,951
Lease in-place Value	2,978
Atlanta, Georgia \| Industrial Property \| Atlanta, GA Industrial Property Expiring 2020
Real Estate [Line Items]
Initial Cost Basis	45,441
Land and Land Estate	3,251
Building and Improvements	40,023
Lease in-place Value	2,167
Atlanta, Georgia \| Industrial Property \| Atlanta, GA Industrial Property Expiring 2024
Real Estate [Line Items]
Initial Cost Basis	27,353
Land and Land Estate	2,536
Building and Improvements	22,825
Lease in-place Value	1,992
Cincinnati, Ohio \| Industrial Property \| Cincinnati, Ohio, Industrial Property Expiring 2023
Real Estate [Line Items]
Initial Cost Basis	13,762
Land and Land Estate	544
Building and Improvements	12,376
Lease in-place Value	842
Cincinnati, Ohio \| Industrial Property \| Cincinnati, Ohio, Industrial Property Expiring 2030
Real Estate [Line Items]
Initial Cost Basis	100,288
Land and Land Estate	3,950
Building and Improvements	88,427
Lease in-place Value	7,911
Cincinnati, Ohio \| Industrial Property \| Cincinnati, Ohio, Industrial Property Expiring 2027
Real Estate [Line Items]
Initial Cost Basis	65,763
Land and Land Estate	3,123
Building and Improvements	60,703
Lease in-place Value	5,392
Below Market Lease	(3,455)
Dallas, Texas \| Industrial Property \| Dallas, TX Property Expiring 2023
Real Estate [Line Items]
Initial Cost Basis	28,201
Land and Land Estate	2,420
Building and Improvements	23,330
Lease in-place Value	2,451
Greenville/Spartanburg, South Carolina \| Industrial Property \| Greenville/Spartanburg, SC Property Expiring 2024
Real Estate [Line Items]
Initial Cost Basis	33,253
Land and Land Estate	1,615
Building and Improvements	27,829
Lease in-place Value	3,809
Greenville/Spartanburg, South Carolina \| Industrial Property \| Greenville/Spartanburg, SC Property Expiring July 2024
Real Estate [Line Items]
Initial Cost Basis	16,817
Land and Land Estate	1,406
Building and Improvements	14,272
Lease in-place Value	1,139
Greenville/Spartanburg, South Carolina \| Industrial Property \| Greenville/Spartanburg, SC Industrial Property Expiring 2025
Real Estate [Line Items]
Initial Cost Basis	15,583
Land and Land Estate	1,257
Building and Improvements	13,252
Lease in-place Value	1,074
Greenville/Spartanburg, South Carolina \| Industrial Property \| Greenville/Spartanburg, SC Industrial Property Expiring 2034
Real Estate [Line Items]
Initial Cost Basis	94,233
Land and Land Estate	6,959
Building and Improvements	78,364
Lease in-place Value	8,910
Memphis, Tennessee \| Industrial Property \| Memphis, Tennessee, Industrial Property Expiring 2024
Real Estate [Line Items]
Initial Cost Basis	49,395
Land and Land Estate	2,646
Building and Improvements	40,452
Lease in-place Value	6,297
Memphis, Tennessee \| Industrial Property \| Memphis, Tennessee, Industrial Property Expiring 2023
Real Estate [Line Items]
Initial Cost Basis	18,316
Land and Land Estate	851
Building and Improvements	15,465
Lease in-place Value	2,000
Phoenix, Arizona \| Industrial Property \| Phoenix, AZ Industrial Property Expiring 2026
Real Estate [Line Items]
Initial Cost Basis	21,020
Land and Land Estate	3,311
Building and Improvements	16,013
Lease in-place Value	1,696
Phoenix, Arizona \| Industrial Property \| Phoenix, AZ Industrial Property Expiring 2030
Real Estate [Line Items]
Initial Cost Basis	67,079
Land and Land Estate	11,970
Building and Improvements	48,924
Lease in-place Value	6,185
Chicago, Illinois \| Industrial Property \| Chicago, IL Industrial Property Expiring 2029
Real Estate [Line Items]
Initial Cost Basis	49,348
Land and Land Estate	3,432
Building and Improvements	40,947
Lease in-place Value	$ 4,969

Investment Building and Building Improvements Acquired During Period

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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

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-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.

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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
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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)
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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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