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Consolidated Balance Sheets (Parenthetical 2) (USD $) In Thousands, except Share data, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013
--- | --- | ---
Allowance for doubtful accounts - AR | $ 2,282 | $ 2,976
Allowance - Deferred rent receivable | 1,491 | 2,126
Common Shares of beneficial interest, shares outstanding | 87,668,308 | 87,394,512
Corporate Office Properties, L.P. |  |
Allowance for doubtful accounts - AR | 2,282 | 2,976
Allowance - Deferred rent receivable | $ 1,491 | $ 2,126
Corporate Office Properties, L.P. | General Partner |  |
Preferred Units, Outstanding | 7,431,667 | 9,431,667
Common Shares of beneficial interest, shares outstanding | 87,668,308 | 87,394,512
Corporate Office Properties, L.P. | Limited Partner |  |
Preferred Units, Outstanding | 352,000 | 352,000
Common Shares of beneficial interest, shares outstanding | 3,899,202 | 3,977,700

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