Amount of additional loan amount committed to third party for future development.

No definition available.

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- Definition

Cumulative amount of funds for future infrastructure development disbursed to third party.

+ References

No definition available.

+ Details

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Namespace Prefix:	hiw_
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- Definition

Number of transactions with seller financing.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524

+ Details

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Balance Type:	credit
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- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(4)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524

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- Definition

Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.10(3))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 10

-Subparagraph 3

-Article 9

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- Definition

Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Article 5

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Mortgages and Notes Receivable (Details) (USD $)	3 Months Ended		6 Months Ended
Mortgages and Notes Receivable (Details) (USD $)	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Schedule of mortgages and notes receivable [Abstract]
Mortgages and notes receivable, allowance	$ (376,000)		$ (376,000)		$ (182,000)
Mortgages and notes receivable, net	25,583,000		25,583,000		25,472,000
Notes receivable allowance, promissory notes [Roll Forward]
Beginning notes receivable allowance					182,000
Total notes receivable allowance	376,000		376,000		182,000
Seller Financing [Member]
Schedule of mortgages and notes receivable [Abstract]
Mortgages and notes receivable, gross	16,113,000		16,113,000		15,853,000
Mortgages and notes receivable, allowance	0		0		0
Mortgages and notes receivable, net	16,113,000		16,113,000		15,853,000
Number of transactions with seller financing	2
Notes receivable allowance, promissory notes [Roll Forward]
Beginning notes receivable allowance					0
Total notes receivable allowance	0		0		0
Mortgage Receivable [Member]
Schedule of mortgages and notes receivable [Abstract]
Mortgages and notes receivable, gross	8,715,000		8,715,000		8,648,000
Mortgages and notes receivable, allowance	0		0
Mortgages and notes receivable, net	8,715,000		8,715,000		8,648,000
Additional loan commitment to third party	8,400,000		8,400,000
Cumulative funds for future infrastructure disbursed to third party			100,000
Notes receivable allowance, promissory notes [Roll Forward]
Beginning notes receivable allowance			0
Total notes receivable allowance	0		0
Promissory Notes [Member]
Schedule of mortgages and notes receivable [Abstract]
Mortgages and notes receivable, gross	1,131,000		1,131,000		1,153,000
Mortgages and notes receivable, allowance	(376,000)	(118,000)	(376,000)	(118,000)
Mortgages and notes receivable, net	755,000		755,000		971,000
Notes receivable allowance, promissory notes [Roll Forward]
Beginning notes receivable allowance	437,000	122,000	182,000	61,000
Recoveries/write-offs/other	(61,000)	(4,000)	194,000	57,000
Total notes receivable allowance	$ 376,000	$ 118,000	$ 376,000	$ 118,000