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Equity (Details) (USD $)
In Millions, except Share data, unless otherwise specified |
3 Months Ended | |
|---|---|---|
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Mar. 31, 2015
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Mar. 31, 2014
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| Class of Stock [Line Items] | ||
| Number of operating partnerships units converted into common shares (in units) | 158,000us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits | 48,498us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits |
| Common Shares | ||
| Class of Stock [Line Items] | ||
| Shares issued to the public (in units/ shares) |
890,241us-gaap_StockIssuedDuringPeriodSharesNewIssues / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
|
| Weighted average price per share of stock issued |
30.29ofc_IssuanceofStockWeightedAveragePricePerShare / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
|
| Net proceeds of stock issuance |
26.6ofc_ProceedsfromIssuanceofCommonStockNetofIssuanceCosts / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
|
| Commission costs |
0.4us-gaap_PaymentsOfStockIssuanceCosts / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
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| Remaining capacity under ATM Plan |
84.0ofc_AtMarketStockOfferingProgramEstablishedRemainingCapacity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
|
| Corporate Office Properties, L.P. | Common Shares | ||
| Class of Stock [Line Items] | ||
| Shares issued to the public (in units/ shares) |
890,241us-gaap_StockIssuedDuringPeriodSharesNewIssues / dei_LegalEntityAxis = us-gaap_SubsidiariesMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
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- Definition
At Market Stock, Offering Program Established, Remaining Capacity No definition available.
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- Definition
Issuance of Stock, Weighted Average Price Per Share No definition available.
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- Definition
Proceeds from Issuance of Common Stock, Net of Issuance Costs No definition available.
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- Details
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- Definition
The cash outflow for cost incurred directly with the issuance of an equity security. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of shares issued during the period upon the conversion of units. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of new stock issued during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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