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Organization (Tables) | 6 Months Ended
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Jun. 30, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Summary of forms of ownership and percentage of ownership forms | A summary of our Operating Partnership’s forms of ownership and the percentage of those ownership forms owned by COPT as of June 30, 2012 follows:
Common Units | 94 | %
Series G Preferred Units | 100 | %
Series H Preferred Units | 100 | %
Series I Preferred Units | 0 | %
Series J Preferred Units | 100 | %
Series K Preferred Units | 100 | %
Series L Preferred Units | 100 | %

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- Definition Tabular disclosure of operating partnership's forms of ownership and the percentage of ownership forms owned by the parent company. + References No definition available. + Details
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