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Consolidated Balance Sheets Parentheticals Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Assets: |  |
Accounts receivable allowance | $ 2,848 | $ 3,548
Mortgages and notes receivable allowance | 182 | 61
Accrued straight-line rents receivable allowance | 929 | 1,294
Deferred financing and leasing costs, accumulated amortization | 77,383 | 62,319
Prepaid expenses and other assets, accumulated amortization | 12,318 | 15,089
Equity: |  |
Preferred Stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Preferred Stock, authorized shares (in shares) | 50,000,000 | 50,000,000
Preferred Stock, liquidation preference (in dollars per share) | $ 1,000 | $ 1,000
Preferred Stock, shares issued (in shares) | 29,077 | 29,077
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) | 80,311,437 | 72,647,697
Common Stock, shares outstanding (in shares) | 80,311,437 | 72,647,697
Highwoods Realty Limited Partnership [Member] |  |
Assets: |  |
Accounts receivable allowance | 2,848 | 3,548
Mortgages and notes receivable allowance | 182 | 61
Accrued straight-line rents receivable allowance | 929 | 1,294
Deferred financing and leasing costs, accumulated amortization | 77,383 | 62,319
Prepaid expenses and other assets, accumulated amortization | $ 12,318 | $ 15,089
Equity: |  |
Common Stock, par value (in dollars per share) | $ 0.01 |
Redeemable Operating Partnership Units: |  |
Redeemable Common Units, outstanding (in shares) | 3,733,016 | 3,729,518
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: |  |
General partners' capital account, units outstanding (in shares) | 836,356 | 759,684
Limited partners' capital account, units outstanding (in shares) | 79,066,272 | 71,479,204

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