Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands |
Mar. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Accumulated amortization of deferred leasing costs | $ 34,666 | $ 31,994 |
| Common Shares of beneficial interest, par value (in dollars per share) | $ 0.01 | $ 0.01 |
| Common Shares of beneficial interest, shares authorized | 150,000,000 | 150,000,000 |
| Common Shares of beneficial interest, shares issued | 111,939,790 | 110,241,868 |
| Common Shares of beneficial interest, shares outstanding | 111,939,790 | 110,241,868 |
| Corporate Office Properties, L.P. | ||
| Accumulated amortization of deferred leasing costs | $ 34,666 | $ 31,994 |
| Corporate Office Properties, L.P. | General Partner | ||
| Common Shares of beneficial interest, shares outstanding | 111,939,790 | 110,241,868 |
| Corporate Office Properties, L.P. | Limited Partner | ||
| Common Shares of beneficial interest, shares outstanding | 1,576,024 | 1,332,886 |
| Preferred Units, Outstanding | 352,000 | 352,000 |
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- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition For an unclassified balance sheet, the accumulated amortization, as of the reporting date, which represents the periodic charge to earnings of initial direct costs which have been deferred and are being allocated over the lease term in proportion to the recognition of rental income. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The number of preferred units outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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