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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2012 | Dec. 31, 2011
Preferred Stock, Value, Issued | $ 96,850 |
Brandywine Realty Trust's equity: |  |
Preferred shares, shares authorized | 20,000,000 | 20,000,000
Common shares of Brandywine Realty Trust's beneficial interest, par value (in dollars per share) | $ 0.01 | $ 0.01
Common shares of Brandywine Realty Trust's beneficial interest, shares authorized | 200,000,000 | 200,000,000
Common shares of Brandywine Realty Trust's beneficial interest, shares issued | 143,367,946 | 142,690,755
Common shares of Brandywine Realty Trust's beneficial interest, shares outstanding | 143,367,946 | 142,690,755
Common shares in grantor trust, shares | 293,122 | 292,646
BRANDYWINE OPERATING PARTNERSHIP, L.P. |  |
Preferred Stock, Value, Issued |  | 0
Brandywine Realty Trust's equity: |  |
Preferred shares, dividend rate (as a percent) | 6.90% | 0.00%
Preferred shares, shares issued | 4,000,000 | 0
Preferred shares, shares outstanding | 4,000,000 | 0
Redeemable Limited Partnership, units issued | 2,657,721 | 2,698,648
Redeemable Limited Partnership, units outstanding | 2,657,721 | 2,698,648
General Partners' Capital account, units issued | 143,367,946 | 142,690,755
General Partners' Capital account, units outstanding | 143,367,946 | 142,690,755
7.50% Series C Preferred Shares |  |
Preferred Stock, Value, Issued | 0 | 20
Brandywine Realty Trust's equity: |  |
Preferred shares, dividend rate (as a percent) | 0.00% | 7.50%
Preferred shares, par value (in dollars per share) | $ 0 | $ 0.01
Preferred shares, shares issued | 0 | 2,000,000
Preferred shares, shares outstanding | 0 | 2,000,000
7.375% Series D Preferred Shares |  |
Preferred Stock, Value, Issued | 23 | 23
Brandywine Realty Trust's equity: |  |
Preferred shares, dividend rate (as a percent) | 7.375% | 7.375%
Preferred shares, par value (in dollars per share) | $ 0.01 | $ 0.01
Preferred shares, shares issued | 2,300,000 | 2,300,000
Preferred shares, shares outstanding | 2,300,000 | 2,300,000
7.50% Series D Preferred Shares | BRANDYWINE OPERATING PARTNERSHIP, L.P. |  |
Preferred Stock, Value, Issued | 0 | 47,912
Brandywine Realty Trust's equity: |  |
Preferred shares, dividend rate (as a percent) |  | 7.50%
Preferred shares, shares issued |  | 2,000,000
Preferred shares, shares outstanding |  | 2,000,000
7.375% Series E Preferred Shares |  |
Preferred Stock, Value, Issued | 40 | 0
Brandywine Realty Trust's equity: |  |
Preferred shares, dividend rate (as a percent) | 6.90% |
Preferred shares, par value (in dollars per share) | $ 0.01 |
Preferred shares, shares issued | 4,000,000 |
Preferred shares, shares outstanding | 4,000,000 |
7.375% Series E Preferred Shares | BRANDYWINE OPERATING PARTNERSHIP, L.P. |  |
Preferred Stock, Value, Issued | $ 55,538 | $ 55,538
Brandywine Realty Trust's equity: |  |
Preferred shares, dividend rate (as a percent) | 7.375% | 7.375%
Preferred shares, shares issued | 2,300,000 | 2,300,000
Preferred shares, shares outstanding | 2,300,000 | 2,300,000

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