XML 52 R29.htm IDEA: XBRL DOCUMENT ﻿
v2.3.0.11

Share-Based Payments (LP) | 6 Months Ended
--- | ---
Jun. 30, 2011
Share-Based Payments [Abstract] |
Disclosure Of Compensation Related Costs Share Based Payments Lp [Text Block] | 9. Share-Based Payments During the six months ended June 30, 2011, the Company granted 146,581 stock options with an exercise price equal to the closing market price of a share of its Common Stock on the date of grant. The fair value of each option grant is estimated on the date of grant using the Black-Scholes option pricing model, which resulted in a weighted average grant date fair value per share of $6.47. During the six months ended June 30, 2011, the Company also granted 76,166 shares of time-based restricted stock and 57,386 shares of total return-based restricted stock with weighted average grant date fair values per share of $33.74 and $41.02, respectively. We recorded stock-based compensation expense of $1.4 million each during the three months ended June 30, 2011 and 2010, and $3.5 million each during the six months ended June 30, 2011 and 2010. At June 30, 2011, there was $7.9 million of total unrecognized stock-based compensation costs, which will be recognized over a weighted average remaining service period of 2.4 years.

X
- Definition The entire disclosure for compensation-related costs for equity-based compensation for the Operating Partnership, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + Details
Name: | hiw_DisclosureOfCompensationRelatedCostsShareBasedPaymentsLpTextBlock
Namespace Prefix: | hiw
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration