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Consolidated Balance Sheets (Parentheticals) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2014 | Dec. 31, 2013
Preferred Stock, Shares Authorized | 20,000,000 | 20,000,000
Preferred Stock, Dividend Rate, Percentage | 6.90% | 6.90%
Preferred Stock, Shares Issued | 4,000,000 | 4,000,000
Preferred Stock, Shares Outstanding | 4,000,000 | 4,000,000
Preferred Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01
Common Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01
Common Stock, Shares Authorized | 200,000,000 | 200,000,000
Common Stock, Shares, Issued | 156,916,901 | 156,731,993
Common Stock, Shares, Outstanding | 156,916,901 | 156,731,993
Common shares in grantor trust | 384,571 | 312,279
BRANDYWINE OPERATING PARTNERSHIP, L.P. |  |
Preferred Stock, Dividend Rate, Percentage | 6.90% | 6.90%
Preferred Stock, Shares Issued | 4,000,000 | 4,000,000
Preferred Stock, Shares Outstanding | 4,000,000 | 4,000,000
Redeemable Limited Partnership Units Issued | 1,763,739 | 1,763,739
Redeemable Limited Partnership Units Outstanding | 1,763,739 | 1,763,739
General Partners' Capital Account, Units Issued | 156,916,901 | 156,731,993
General Partners' Capital Account, Units Outstanding | 156,916,901 | 156,731,993

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- Definition Face amount or stated value per share of common stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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