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Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Assets: |  |
Deferred leasing costs, accumulated amortization | $ 143,111 | $ 151,698
Prepaid expenses and other assets, accumulated amortization | $ 21,408 | $ 21,154
Equity/Capital: |  |
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) | 28,821 | 28,826
Preferred Stock, shares outstanding (in shares) | 28,821 | 28,826
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) | 104,892,780 | 103,921,546
Common Stock, shares outstanding (in shares) | 104,892,780 | 103,921,546
Highwoods Realty Limited Partnership [Member] |  |
Assets: |  |
Deferred leasing costs, accumulated amortization | $ 143,111 | $ 151,698
Prepaid expenses and other assets, accumulated amortization | $ 21,408 | $ 21,154
Redeemable Operating Partnership Units: |  |
Redeemable Common Units, outstanding (in shares) | 2,504,805 | 2,838,725
Preferred Units liquidation preference (in dollars per share) | $ 1,000 | $ 1,000
Series A Preferred Units, issued (in shares) | 28,821 | 28,826
Series A Preferred Units, outstanding (in shares) | 28,821 | 28,826
Common Units: |  |
General partners' capital account, units outstanding (in shares) | 1,069,888 | 1,063,515
Limited partners' capital account, units outstanding (in shares) | 103,414,083 | 102,449,222

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