Annual report pursuant to Section 13 and 15(d)

Information by Business Segment (Details 2)

v2.4.1.9
Information by Business Segment (Details 2) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Reconciliation of segment revenues to total revenues                      
Segment revenues from real estate operations                 $ 479,711us-gaap_RealEstateRevenueNet $ 498,633us-gaap_RealEstateRevenueNet $ 493,100us-gaap_RealEstateRevenueNet
Construction contract and other service revenues                 106,748us-gaap_ContractsRevenue 62,363us-gaap_ContractsRevenue 73,836us-gaap_ContractsRevenue
Less: Revenues from discontinued operations (Note 20)                 14us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue (37,636)us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue (58,801)us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
Total revenues 146,971us-gaap_Revenues 153,015us-gaap_Revenues 139,820us-gaap_Revenues 146,667us-gaap_Revenues 128,802us-gaap_Revenues 131,812us-gaap_Revenues 136,527us-gaap_Revenues 126,219us-gaap_Revenues 586,473us-gaap_Revenues 523,360us-gaap_Revenues 508,135us-gaap_Revenues
Reconciliation of segment property operating expenses to property operating expenses                      
Segment property operating expenses                 179,799ofc_SegmentReportingDirectCostsOfLeasedAndRentedPropertyOrEquipment 180,704ofc_SegmentReportingDirectCostsOfLeasedAndRentedPropertyOrEquipment 180,735ofc_SegmentReportingDirectCostsOfLeasedAndRentedPropertyOrEquipment
Less: Property operating expenses from discontinued operations                 135ofc_DisposalGroupIncludingDiscontinuedOperationPropertyOperatingExpense (13,505)ofc_DisposalGroupIncludingDiscontinuedOperationPropertyOperatingExpense (21,529)ofc_DisposalGroupIncludingDiscontinuedOperationPropertyOperatingExpense
Total property operating expenses                 179,934us-gaap_DirectCostsOfLeasedAndRentedPropertyOrEquipment 167,199us-gaap_DirectCostsOfLeasedAndRentedPropertyOrEquipment 159,206us-gaap_DirectCostsOfLeasedAndRentedPropertyOrEquipment
Computation of net operating income from service operations                      
Construction contract and other service revenues                 106,748us-gaap_ContractsRevenue 62,363us-gaap_ContractsRevenue 73,836us-gaap_ContractsRevenue
Construction contract and other service expenses                 (100,058)ofc_ConstructionContractAndOtherServiceExpenses (58,875)ofc_ConstructionContractAndOtherServiceExpenses (70,576)ofc_ConstructionContractAndOtherServiceExpenses
NOI from service operations                 6,690ofc_NetOperatingIncomeLossFromServiceOperations 3,488ofc_NetOperatingIncomeLossFromServiceOperations 3,260ofc_NetOperatingIncomeLossFromServiceOperations
Reconciliation of NOI from real estate operations and NOI from service operations to (loss) income from continuing operations                      
NOI from real estate operations                 299,912ofc_SegmentReportingOperatingIncome 317,929ofc_SegmentReportingOperatingIncome 312,365ofc_SegmentReportingOperatingIncome
NOI from service operations                 6,690ofc_NetOperatingIncomeLossFromServiceOperations 3,488ofc_NetOperatingIncomeLossFromServiceOperations 3,260ofc_NetOperatingIncomeLossFromServiceOperations
Interest and other income                 4,923us-gaap_OtherNonoperatingIncome 3,834us-gaap_OtherNonoperatingIncome 7,172us-gaap_OtherNonoperatingIncome
Equity in income (loss) of unconsolidated entities                 229us-gaap_IncomeLossFromEquityMethodInvestments 2,110us-gaap_IncomeLossFromEquityMethodInvestments (546)us-gaap_IncomeLossFromEquityMethodInvestments
Income tax expense                 (310)us-gaap_IncomeTaxExpenseBenefit (1,978)us-gaap_IncomeTaxExpenseBenefit (381)us-gaap_IncomeTaxExpenseBenefit
Other adjustments:                      
Depreciation and amortization associated with real estate operations                 (136,086)ofc_DepreciationAndAmortizationForRealEstateOperations (113,214)ofc_DepreciationAndAmortizationForRealEstateOperations (107,998)ofc_DepreciationAndAmortizationForRealEstateOperations
Impairment losses                 (1,416)us-gaap_AssetImpairmentCharges (5,857)us-gaap_AssetImpairmentCharges (43,678)us-gaap_AssetImpairmentCharges
General, administrative and leasing expenses                 (31,794)us-gaap_SellingGeneralAndAdministrativeExpense (30,869)us-gaap_SellingGeneralAndAdministrativeExpense (31,900)us-gaap_SellingGeneralAndAdministrativeExpense
Business development expenses and land carry costs                 (5,573)ofc_BusinessDevelopmentExpensesAndLandCarryCosts (5,436)ofc_BusinessDevelopmentExpensesAndLandCarryCosts (5,711)ofc_BusinessDevelopmentExpensesAndLandCarryCosts
Interest expense on continuing operations                 (92,393)us-gaap_InterestAndDebtExpense (82,010)us-gaap_InterestAndDebtExpense (86,401)us-gaap_InterestAndDebtExpense
NOI from discontinued operations                 (121)ofc_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLossExcludingDepreciationAndAmortization (24,131)ofc_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLossExcludingDepreciationAndAmortization (37,272)ofc_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLossExcludingDepreciationAndAmortization
Loss on early extinguishment of debt                 (9,552)us-gaap_GainsLossesOnExtinguishmentOfDebt (27,030)us-gaap_GainsLossesOnExtinguishmentOfDebt (943)us-gaap_GainsLossesOnExtinguishmentOfDebt
Income from continuing operations $ 5,874us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest $ 13,727us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest $ 9,248us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest $ 5,660us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest $ 14,432us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest $ 10,974us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest $ (232)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest $ 11,662us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest $ 34,509us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest $ 36,836us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest $ 7,967us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest