Amount of closing credits excluded from the sale price for a disposition.

No definition available.

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Namespace Prefix:	hiw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The purchase price of real estate before and/or after closing credits to buyer for unfunded tenant improvements, building improvements and/or free rent, if any.

+ References

No definition available.

+ Details

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Namespace Prefix:	hiw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84176398&loc=d3e2941-110230

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
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Period Type:

Real Estate Assets (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
Real Estate Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Significant Acquisitions and Disposals [Line Items]
Gains on disposition of property	$ 0		$ 5,861	$ 5,332	$ 10,258
2017 Dispositions [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase price of real estate		$ 13,000
Disposition closing credits excluded		1,200
Gains on disposition of property		$ 5,300