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Earnings Per Share/Unit (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Numerator: |  |  |  |  |  |  |  |
Income from continuing operations | $ 16,232 |  | $ 10,963 |  | $ 29,400 |  | $ 21,902 |
Net (income) attributable to noncontrolling interests in the Operating Partnership from continuing operations | (672) |  | (517) |  | (1,227) |  | (982) |
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations | (187) |  | (223) |  | (390) |  | (407) |
Dividends on Preferred Stock | (627) |  | (627) |  | (1,254) |  | (1,254) |
Income from continuing operations available for common stockholders | 14,746 |  | 9,596 |  | 26,529 |  | 19,259 |
Income from discontinued operations | 13,347 |  | 3,535 |  | 13,939 |  | 10,928 |
Net (income) attributable to noncontrolling interests in the Operating Partnership from discontinued operations | (571) |  | (169) |  | (597) |  | (531) |
Income from discontinued operations available for common stockholders | 12,776 |  | 3,366 |  | 13,342 |  | 10,397 |
Net income available for common stockholders | 27,522 |  | 12,962 |  | 39,871 |  | 29,656 |
Denominator: |  |  |  |  |  |  |  |
Denominator for basic earnings per Common Share - weighted average shares (in shares) | 82,811,000 | [1],[2] | 74,662,000 | [1],[2] | 81,925,000 | [1],[2] | 73,749,000 | [1],[2]
Earnings per Common Share - basic: |  |  |  |  |  |  |  |
Income from continuing operations available for common stockholders (in dollars per share) | $ 0.18 |  | $ 0.13 |  | $ 0.33 |  | $ 0.26 |
Income from discontinued operations available for common stockholders (in dollars per share) | $ 0.15 |  | $ 0.04 |  | $ 0.16 |  | $ 0.14 |
Net income available for common stockholders (in dollars per share) | $ 0.33 |  | $ 0.17 |  | $ 0.49 |  | $ 0.40 |
Numerator: |  |  |  |  |  |  |  |
Income from continuing operations | 16,232 |  | 10,963 |  | 29,400 |  | 21,902 |
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations | (187) |  | (223) |  | (390) |  | (407) |
Dividends on Preferred Stock | (627) |  | (627) |  | (1,254) |  | (1,254) |
Income from continuing operations available for common stockholders before net (income) attributable to noncontrolling interests in the Operating Partnership | 15,418 |  | 10,113 |  | 27,756 |  | 20,241 |
Income from discontinued operations available for common stockholders | 13,347 |  | 3,535 |  | 13,939 |  | 10,928 |
Net income available for common stockholders before net (income) attributable to noncontrolling interests in the Operating Partnership | 28,765 |  | 13,648 |  | 41,695 |  | 31,169 |
Denominator: |  |  |  |  |  |  |  |
Denominator for basic earnings per Common Share - weighted average shares (in shares) | 82,811,000 | [1],[2] | 74,662,000 | [1],[2] | 81,925,000 | [1],[2] | 73,749,000 | [1],[2]
Stock options using the treasury method | 132,000 |  | 141,000 |  | 120,000 |  | 129,000 |
Noncontrolling interests Common Units | 3,688,000 |  | 3,718,000 |  | 3,707,000 |  | 3,723,000 |
Denominator for diluted earnings per Common Share - adjusted weighted average shares and assumed conversions (in shares) (1) | 86,631,000 | [2] | 78,521,000 | [2] | 85,752,000 | [2] | 77,601,000 | [2]
Earnings per Common Share - diluted: |  |  |  |  |  |  |  |
Income from continuing operations available for common stockholders (in dollars per share) | $ 0.18 |  | $ 0.13 |  | $ 0.33 |  | $ 0.26 |
Income from discontinued operations available for common stockholders (in dollars per share) | $ 0.15 |  | $ 0.04 |  | $ 0.16 |  | $ 0.14 |
Net income available for common stockholders (in dollars per share) | $ 0.33 |  | $ 0.17 |  | $ 0.49 |  | $ 0.40 |
Earnings per Common Unit - diluted: |  |  |  |  |  |  |  |
Number of anti-dilutive options and warrants not included in earnings per share (in dollars per share) | 300,000 |  | 500,000 |  | 300,000 |  | 500,000 |
Highwoods Realty Limited Partnership [Member] |  |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |  |
Income from continuing operations | 16,235 |  | 10,966 |  | 29,350 |  | 21,907 |
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations | (187) |  | (223) |  | (390) |  | (407) |
Distributions on Preferred Units | (627) |  | (627) |  | (1,254) |  | (1,254) |
Income from continuing operations available for common unitholders | 15,421 |  | 10,116 |  | 27,706 |  | 20,246 |
Income from discontinued operations available for common unitholders | 13,347 |  | 3,535 |  | 13,939 |  | 10,928 |
Net income available for common unitholders | 28,768 |  | 13,651 |  | 41,645 |  | 31,174 |
Denominator: |  |  |  |  |  |  |  |
Denominator for basic earnings per Common Unit - weighted average units (in shares) | 86,090,000 | [1],[2],[3] | 77,971,000 | [1],[3] | 85,223,000 | [1],[3] | 77,063,000 | [1],[3]
Earnings per Common Unit - basic: |  |  |  |  |  |  |  |
Income from continuing operations available for common unitholders (in dollars per share) | $ 0.18 |  | $ 0.13 |  | $ 0.33 |  | $ 0.26 |
Income from discontinued operations available for common unitholders (in dollars per share) | $ 0.15 |  | $ 0.05 |  | $ 0.16 |  | $ 0.14 |
Net income available for common unitholders (in dollars per share) | $ 0.33 |  | $ 0.18 |  | $ 0.49 |  | $ 0.40 |
Numerator: |  |  |  |  |  |  |  |
Income from continuing operations | 16,235 |  | 10,966 |  | 29,350 |  | 21,907 |
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations | (187) |  | (223) |  | (390) |  | (407) |
Distributions on Preferred Units | (627) |  | (627) |  | (1,254) |  | (1,254) |
Income from continuing operations available for common unitholders | 15,421 |  | 10,116 |  | 27,706 |  | 20,246 |
Income from discontinued operations available for common unitholders | 13,347 |  | 3,535 |  | 13,939 |  | 10,928 |
Net income available for common unitholders | $ 28,768 |  | $ 13,651 |  | $ 41,645 |  | $ 31,174 |
Denominator: |  |  |  |  |  |  |  |
Denominator for basic earnings per Common Unit - weighted average units (in shares) | 86,090,000 | [1],[2],[3] | 77,971,000 | [1],[3] | 85,223,000 | [1],[3] | 77,063,000 | [1],[3]
Stock options using the treasury method | 132,000 |  | 141,000 |  | 120,000 |  | 129,000 |
Denominator for diluted earnings per Common Unit - adjusted weighted average units and assumed conversions (in shares) | 86,222,000 | [3] | 78,112,000 | [2],[3] | 85,343,000 | [3] | 77,192,000 | [3]
Earnings per Common Unit - diluted: |  |  |  |  |  |  |  |
Income from continuing operations available for common unitholders (in dollars per share) | 0.18 |  | 0.13 |  | 0.33 |  | 0.26 |
Income from discontinued operations available for common unitholders (in dollars per share) | 0.15 |  | 0.04 |  | 0.16 |  | 0.14 |
Net income available for common unitholders (in dollars per share) | 0.33 |  | 0.17 |  | 0.49 |  | 0.40 |
Number of anti-dilutive options and warrants not included in earnings per share (in dollars per share) | 300,000 |  | 500,000 |  | 300,000 |  | 500,000 |
[1] | Includes all unvested restricted stock where dividends on such restricted stock are non-forfeitable.
[2] | There were 0.3 million and 0.5 million options outstanding during the three months ended June 30, 2013 and 2012, respectively, and 0.3 million and 0.5 million options outstanding during the six months ended June 30, 2013 and 2012, respectively, that were not included in the computation of diluted earnings per share because the impact of including such options would be anti-dilutive.
[3] | There were 0.3 million and 0.5 million options outstanding during the three months ended June 30, 2013 and 2012, respectively, and 0.3 million and 0.5 million options outstanding during the six months ended June 30, 2013 and 2012, respectively, that were not included in the computation of diluted earnings per unit because the impact of including such options would be anti-dilutive.

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- Definition The amount of Income or Loss from continuing operations available to each limited partner unit outstanding during the reporting period and each unit that would have been outstanding assuming the issuance of limited partner units for all dilutive potential units outstanding during the reporting period. Limited partners have limited liability and do not manage the partnership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187171-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section F + Details
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- Definition Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 29 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 47 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 43 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.12) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 13 -Article 7 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.14) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Article 5 + Details
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