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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified | Sep. 30, 2012 | Dec. 31, 2011
--- | --- | ---
Assets: [Abstract] |  |
Accounts receivable allowance | $ 3,437 | $ 3,548
Mortgages and notes receivable allowance | 211 | 61
Accrued straight-line rents receivable allowance | 1,076 | 1,294
Deferred financing and leasing costs, accumulated amortization | 73,579 | 62,319
Prepaid expenses and other assets, accumulated amortization | 12,585 | 15,089
Equity: [Abstract] |  |
Series A Preferred Stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Series A Preferred Stock, authorized shares (in shares) | 50,000,000 | 50,000,000
Series A Preferred Stock, liquidation preference (in dollars per share) | $ 1,000 | $ 1,000
Series A Preferred Stock, shares issued (in shares) | 29,077 | 29,077
Series A Preferred Stock, shares outstanding (in shares) | 29,077 | 29,077
Common Stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Common Stock, authorized shares (in shares) | 200,000,000 | 200,000,000
Common Stock, shares issued (in shares) | 78,529,922 | 72,647,697
Common Stock, shares outstanding (in shares) | 78,529,922 | 72,647,697
Highwoods Realty Limited Partnership [Member] |  |
Assets: [Abstract] |  |
Accounts receivable allowance | 3,437 | 3,548
Mortgages and notes receivable allowance | 211 | 61
Accrued straight-line rents receivable allowance | 1,076 | 1,294
Deferred financing and leasing costs, accumulated amortization | 73,579 | 62,319
Prepaid expenses and other assets, accumulated amortization | $ 12,585 | $ 15,089
Equity: [Abstract] |  |
Common Stock, par value (in dollars per share) | $ 0.01 |
Redeemable Operating Partnership Units: [Abstract] |  |
Redeemable Common Units outstanding (in shares) | 3,775,016 | 3,729,518
Series A Preferred Units, liquidation preference (in dollars per share) | $ 1,000 | $ 1,000
Series A Preferred Units, issued (in shares) | 29,077 | 29,077
Series A Preferred Units, outstanding (in shares) | 29,077 | 29,077
Common Units: [Abstract] |  |
General partners' capital account, units outstanding (in shares) | 818,961 | 759,684
Limited partners' capital account, units outstanding (in shares) | 77,302,152 | 71,479,204

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