The number of tenants.

No definition available.

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- Definition

The amount of tenant improvement allowances and leasing commissions received.

+ References

No definition available.

+ Details

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- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
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- Definition

Amount of expense (reversal of expense) which increases (decreases) the accrual for environmental loss contingencies from revisions in estimates to existing obligations. Excludes changes related to business acquisitions, divestitures, or currency movement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (SAB TOPIC 5.Y.Q2)
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- Definition

Amount of cash outflow to settle environmental loss contingencies.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section S99
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- Definition

Area of land held.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Total anticipated costs associated with remediation, site restoration, postclosure, monitoring commitments, or other exit costs that may occur on the sale, disposal, or abandonment of a particular property resulting from unanticipated contamination of the assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 450
-SubTopic 20
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+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Carrying amount of the liability for remediation of environmental damage pertaining to assets or businesses previously disposed.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
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-Paragraph 1
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- Definition

Estimate of reasonably possible loss exposure in excess of amount accrued for remediation, site restoration, postclosure, monitoring commitments, or other exit costs associated with the sale, disposal or abandonment of a particular property resulting from unanticipated contamination of the assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Balance Type:	debit
Period Type:	duration

- Definition

Net cash outflow for the allowance granted to lessee and/or direct costs incurred by lessor used to prepare the leased premises for tenant's occupancy; for costs that are essential to originating the lease and would not otherwise have been incurred without the lease agreement, including but not limited to, evaluating the lessee's credit condition, guarantees, and collateral and costs incurred in negotiating, processing, and executing the lease agreement; and for any commission(s) incurred.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Amount of cash outflow for the allowance granted to lessee and/or direct costs incurred by lessor used to prepare the leased premises for tenant's occupancy.

+ References

No definition available.

+ Details

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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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- Details

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- Details

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- Details

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- Details

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ACCRUED AND OTHER LIABILITIES - Reserve for Tenant Improvements and Environmental Reserves (Details) $ in Thousands			3 Months Ended			6 Months Ended		12 Months Ended		60 Months Ended
	Jun. 30, 2016 USD ($)	Dec. 31, 2015 USD ($) a	Mar. 31, 2019 USD ($)	Dec. 31, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2015 USD ($) a	Dec. 31, 2014 USD ($) a	Dec. 31, 2018 USD ($)	Feb. 21, 2020 USD ($)	Jan. 24, 2020 USD ($) tenant
Environmental Reserve for Monitoring Environmental Remediation Work Previously Performed
Environmental reserves
Additional environmental reserve accrued				$ 51				$ 500	$ 110	$ 661
Environmental costs funded						$ 580
Environmental reserve accrued						81
Wetlands restoration
Environmental reserves
Area of land (in acres) \| a		148.4						148.4
Estimated cost	$ 2,000		$ 2,400		$ 2,000	2,400	$ 2,400
Environmental costs funded						2,300
Accrued restoration cost		$ 1,700				57		$ 1,700
Increase in accrual of remediation costs			$ 361		$ 300		$ 361
Minimum \| Environmental Reserve for Monitoring Environmental Remediation Work Previously Performed
Environmental reserves
Estimated cost								500
Minimum \| Wetlands restoration
Environmental reserves
Estimated cost		1,700
Maximum \| Environmental Reserve for Monitoring Environmental Remediation Work Previously Performed
Environmental reserves
Area of land (in acres) \| a									1
Estimated cost								$ 1,000
Maximum \| Wetlands restoration
Environmental reserves
Estimated cost		$ 1,900
Atlanta, Georgia
Environmental reserves
Tenant improvement allowances and leasing commissions						229					$ 460
Funding for tenant improvements						231
Chandler, Arizona
Environmental reserves
Tenant improvement allowances and leasing commissions												$ 1,300
Payment of tenant improvement allowances and leasing commissions						$ 0
Number of tenant \| tenant												2