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Earnings Per Share and Per Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Earnings per Common Share/Unit - basic: [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  |  |  |  |  |  |  |  | $ 177,630 | $ 191,663 | $ 122,546
Net (income) attributable to noncontrolling interests in the Operating Partnership from continuing operations |  |  |  |  |  |  |  |  | (4,588) | (5,059) | (3,331)
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations | $ (289) | $ (324) | $ (308) | $ (286) | $ (325) | $ (315) | $ (299) | $ (300) | (1,207) | (1,239) | (1,253)
Dividends on Preferred Stock | (623) | (623) | (623) | (623) | (623) | (623) | (623) | (623) | (2,492) | (2,492) | (2,501)
Income from continuing operations available for common stockholders |  |  |  |  |  |  |  |  | 169,343 | 182,873 | 115,461
Income from discontinued operations |  |  |  |  |  |  |  |  | 0 | 0 | 418,593
Net (income) attributable to noncontrolling interests in the Operating Partnership from discontinued operations |  |  |  |  |  |  |  |  | 0 | 0 | (12,265)
Income from discontinued operations available for common stockholders |  |  |  |  |  |  |  |  | 0 | 0 | 406,328
Net income available for common stockholders | $ 53,048 | $ 33,160 | $ 50,686 | $ 32,449 | $ 56,570 | $ 57,040 | $ 37,589 | $ 31,674 | $ 169,343 | $ 182,873 | $ 521,789
Denominator: |  |  |  |  |  |  |  |  |  |  |
Denominator for basic earnings per Common Share - weighted average shares (in shares) |  |  |  |  |  |  |  |  | 103,439 | 102,682 | 98,439
Earnings per Common Share - basic: |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations available for common stockholders (in dollars per share) |  |  |  |  |  |  |  |  | $ 1.64 | $ 1.78 | $ 1.17
Income from discontinued operations available for common stockholders (in dollars per share) |  |  |  |  |  |  |  |  | 0.00 | 0.00 | 4.13
Net income available for common stockholders (in dollars per share) | $ 0.51 | $ 0.32 | $ 0.49 | $ 0.31 | $ 0.55 | $ 0.55 | $ 0.37 | $ 0.31 | $ 1.64 | $ 1.78 | $ 5.30
Earnings per Common Share/Unit - diluted: [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  |  |  |  |  |  |  |  | $ 177,630 | $ 191,663 | $ 122,546
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations | $ (289) | $ (324) | $ (308) | $ (286) | $ (325) | $ (315) | $ (299) | $ (300) | (1,207) | (1,239) | (1,253)
Dividends on Preferred Stock | $ (623) | $ (623) | $ (623) | $ (623) | $ (623) | $ (623) | $ (623) | $ (623) | (2,492) | (2,492) | (2,501)
Income from continuing operations available for common stockholders before net (income) attributable to noncontrolling interests in the Operating Partnership |  |  |  |  |  |  |  |  | 173,931 | 187,932 | 118,792
Income from discontinued operations |  |  |  |  |  |  |  |  | 0 | 0 | 418,593
Net income available for common stockholders before net (income) attributable to noncontrolling interests in the Operating Partnership |  |  |  |  |  |  |  |  | $ 173,931 | $ 187,932 | $ 537,385
Denominator: |  |  |  |  |  |  |  |  |  |  |
Denominator for basic earnings per Common Share - weighted average shares (in shares) |  |  |  |  |  |  |  |  | 103,439 | 102,682 | 98,439
Stock options using the treasury method |  |  |  |  |  |  |  |  | 33 | 79 | 87
Noncontrolling interests Common Units |  |  |  |  |  |  |  |  | 2,796 | 2,833 | 2,872
Denominator for diluted earnings per Common Share - adjusted weighted average shares and assumed conversions (in shares) |  |  |  |  |  |  |  |  | 106,268 | 105,594 | 101,398
Earnings per Common Share - diluted: |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations available for common stockholders (in dollars per share) |  |  |  |  |  |  |  |  | $ 1.64 | $ 1.78 | $ 1.17
Income from discontinued operations available for common stockholders (in dollars per share) |  |  |  |  |  |  |  |  | 0.00 | 0.00 | 4.13
Net income available for common stockholders (in dollars per share) | $ 0.51 | $ 0.32 | $ 0.49 | $ 0.31 | $ 0.55 | $ 0.55 | $ 0.37 | $ 0.31 | $ 1.64 | $ 1.78 | $ 5.30
Highwoods Realty Limited Partnership [Member] |  |  |  |  |  |  |  |  |  |  |
Earnings per Common Share/Unit - basic: [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  |  |  |  |  |  |  |  | $ 177,630 | $ 191,663 | $ 122,546
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations | $ (289) | $ (324) | $ (308) | $ (286) | $ (325) | $ (315) | $ (299) | $ (300) | (1,207) | (1,239) | (1,253)
Distributions on Preferred Units | (623) | (623) | (623) | (623) | (623) | (623) | (623) | (623) | (2,492) | (2,492) | (2,501)
Income from continuing operations available for common unitholders |  |  |  |  |  |  |  |  | 173,931 | 187,932 | 118,792
Income from discontinued operations available for common unitholders |  |  |  |  |  |  |  |  | 0 | 0 | 418,593
Net income available for common unitholders | $ 54,465 | $ 34,062 | $ 52,067 | $ 33,337 | $ 58,127 | $ 58,611 | $ 38,632 | $ 32,562 | $ 173,931 | $ 187,932 | $ 537,385
Denominator: |  |  |  |  |  |  |  |  |  |  |
Denominator for basic earnings per Common Unit - weighted average units (in shares) |  |  |  |  |  |  |  |  | 105,826 | 105,106 | 100,902
Earnings per Common Unit - basic: |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations available for common unitholders (in dollars per share) |  |  |  |  |  |  |  |  | $ 1.64 | $ 1.79 | $ 1.18
Income from discontinued operations available for common unitholders (in dollars per share) |  |  |  |  |  |  |  |  | 0.00 | 0.00 | 4.15
Net income available for common unitholders (in dollars per share) | $ 0.51 | $ 0.32 | $ 0.49 | $ 0.32 | $ 0.55 | $ 0.55 | $ 0.37 | $ 0.31 | $ 1.64 | $ 1.79 | $ 5.33
Earnings per Common Share/Unit - diluted: [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  |  |  |  |  |  |  |  | $ 177,630 | $ 191,663 | $ 122,546
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations | $ (289) | $ (324) | $ (308) | $ (286) | $ (325) | $ (315) | $ (299) | $ (300) | (1,207) | (1,239) | (1,253)
Distributions on Preferred Units | (623) | (623) | (623) | (623) | (623) | (623) | (623) | (623) | (2,492) | (2,492) | (2,501)
Income from continuing operations available for common unitholders |  |  |  |  |  |  |  |  | 173,931 | 187,932 | 118,792
Income from discontinued operations available for common unitholders |  |  |  |  |  |  |  |  | 0 | 0 | 418,593
Net income available for common unitholders | $ 54,465 | $ 34,062 | $ 52,067 | $ 33,337 | $ 58,127 | $ 58,611 | $ 38,632 | $ 32,562 | $ 173,931 | $ 187,932 | $ 537,385
Denominator: |  |  |  |  |  |  |  |  |  |  |
Denominator for basic earnings per Common Unit - weighted average units (in shares) |  |  |  |  |  |  |  |  | 105,826 | 105,106 | 100,902
Stock options using the treasury method |  |  |  |  |  |  |  |  | 33 | 79 | 87
Denominator for diluted earnings per Common Unit - adjusted weighted average units and assumed conversions (in shares) |  |  |  |  |  |  |  |  | 105,859 | 105,185 | 100,989
Earnings per Common Unit - diluted: |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations available for common unitholders (in dollars per share) |  |  |  |  |  |  |  |  | $ 1.64 | $ 1.79 | $ 1.18
Income from discontinued operations available for common unitholders (in dollars per share) |  |  |  |  |  |  |  |  | 0.00 | 0.00 | 4.14
Net income available for common unitholders (in dollars per share) | $ 0.51 | $ 0.32 | $ 0.49 | $ 0.32 | $ 0.55 | $ 0.55 | $ 0.37 | $ 0.31 | $ 1.64 | $ 1.79 | $ 5.32

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