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Prepaid Expenses and Other Assets (Details) (USD $)
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Mar. 31, 2015
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Dec. 31, 2014
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| Prepaid Expense and Other Assets [Abstract] | ||
| Construction contract costs incurred in excess of billings | $ 19,136,000us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms | $ 6,656,000us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms |
| Prepaid expenses | 14,862,000us-gaap_PrepaidExpenseCurrentAndNoncurrent | 20,570,000us-gaap_PrepaidExpenseCurrentAndNoncurrent |
| Lease incentives, net | 13,183,000us-gaap_IncentiveToLessee | 13,344,000us-gaap_IncentiveToLessee |
| Furniture, fixtures and equipment, net | 6,349,000us-gaap_PropertyPlantAndEquipmentNet | 6,637,000us-gaap_PropertyPlantAndEquipmentNet |
| Deposit on acquisitions | 5,066,000us-gaap_DepositsAssets | 516,000us-gaap_DepositsAssets |
| Deferred tax asset, net | 3,946,000us-gaap_DeferredTaxAssetsNet | 4,002,000us-gaap_DeferredTaxAssetsNet |
| Operating notes receivable | 3,629,000us-gaap_LoansAndLeasesReceivableNetReportedAmountOther | 3,797,000us-gaap_LoansAndLeasesReceivableNetReportedAmountOther |
| Equity method investments | 2,390,000us-gaap_EquityMethodInvestments | 2,368,000us-gaap_EquityMethodInvestments |
| Other assets | 2,939,000us-gaap_OtherAssets | 2,359,000us-gaap_OtherAssets |
| Prepaid expenses and other assets | 71,500,000us-gaap_PrepaidExpenseAndOtherAssets | 60,249,000us-gaap_PrepaidExpenseAndOtherAssets |
| Long-term Operating Notes Receivable | ||
| Mortgage and Other Investing Receivables [Line Items] | ||
| Operating notes receivable |
3,600,000ofc_OperatingNotesReceivableLongTerm / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = ofc_LongTermOperatingNotesReceivableMember |
3,600,000ofc_OperatingNotesReceivableLongTerm / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = ofc_LongTermOperatingNotesReceivableMember |
| Allowances for estimated losses |
281,000us-gaap_AllowanceForNotesAndLoansReceivableNoncurrent / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = ofc_LongTermOperatingNotesReceivableMember |
252,000us-gaap_AllowanceForNotesAndLoansReceivableNoncurrent / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = ofc_LongTermOperatingNotesReceivableMember |
| Taxable REIT Subsidiary | ||
| Mortgage and Other Investing Receivables [Line Items] | ||
| Deferred tax assets, valuation allowance |
$ 2,100,000us-gaap_DeferredTaxAssetsValuationAllowance / dei_LegalEntityAxis = ofc_TaxableReitSubsidiaryMember |
$ 2,100,000us-gaap_DeferredTaxAssetsValuationAllowance / dei_LegalEntityAxis = ofc_TaxableReitSubsidiaryMember |
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- Details
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- Definition
Represents the amount of operating notes receivables due from tenants with terms exceeding one year. No definition available.
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- Definition
A valuation allowance relating to a written agreement to receive money (at a specified future date(s) more than one year from the reporting date, consisting of principal as well as any accrued interest) for the portion that is expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of receivable reflecting the cost incurred on uncompleted contracts in excess of related billings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment in the future. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents the deferred charge for an incentive or inducement granted by a lessor to a lessee, in order to motivate the lessee to enter the lease agreement, which incentive or inducement is to be recognized as a reduction of rental revenue over the lease term. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of other loans and leases not otherwise specified in the taxonomy. Excludes loans and leases covered under loss sharing agreements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The aggregate carrying amounts, as of the balance sheet date, of assets not separately disclosed in the balance sheet. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets. No definition available.
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- Definition
Carrying amount as of the balance sheet date of expenditures made in advance of when the economic benefit of the cost will be realized, and which will be expensed in future periods with the passage of time or when a triggering event occurs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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