Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Cash Flows

v2.4.1.9
Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Cash flows from operating activities    
Revenues from real estate operations received $ 117,521ofc_RevenuesFromRealEstateOperationsReceived $ 116,386ofc_RevenuesFromRealEstateOperationsReceived
Construction contract and other service revenues received 19,968ofc_ConstructionContractAndOtherServiceRevenuesReceived 17,289ofc_ConstructionContractAndOtherServiceRevenuesReceived
Property operating expenses paid (42,768)ofc_PropertyOperatingExpensesPaid (42,739)ofc_PropertyOperatingExpensesPaid
Construction contract and other service expenses paid (27,853)ofc_ConstructionContractAndOtherServiceExpensesPaid (11,397)ofc_ConstructionContractAndOtherServiceExpensesPaid
General, administrative, leasing, business development and land carry costs paid (12,728)ofc_GeneralAndAdministrativeAndLeasingAndBusinessDevelopmentExpensesPaid (9,906)ofc_GeneralAndAdministrativeAndLeasingAndBusinessDevelopmentExpensesPaid
Interest expense paid (12,795)us-gaap_InterestPaidNet (18,403)us-gaap_InterestPaidNet
Payments in connection with early extinguishment of debt (3)us-gaap_PaymentsOfDebtExtinguishmentCosts (101)us-gaap_PaymentsOfDebtExtinguishmentCosts
Interest and other income received 556ofc_InterestAndOtherIncomeReceived 217ofc_InterestAndOtherIncomeReceived
Income taxes (paid) refunded (8)us-gaap_IncomeTaxesPaidNet 192us-gaap_IncomeTaxesPaidNet
Net cash provided by operating activities 41,890us-gaap_NetCashProvidedByUsedInOperatingActivities 51,538us-gaap_NetCashProvidedByUsedInOperatingActivities
Cash flows from investing activities    
Acquisitions of operating properties (56,622)us-gaap_PaymentsToAcquireCommercialRealEstate 0us-gaap_PaymentsToAcquireCommercialRealEstate
Construction, development and redevelopment (62,057)us-gaap_PaymentsToDevelopRealEstateAssets (42,625)us-gaap_PaymentsToDevelopRealEstateAssets
Tenant improvements on operating properties (5,520)us-gaap_PaymentsForTenantImprovements (4,357)us-gaap_PaymentsForTenantImprovements
Other capital improvements on operating properties (3,720)us-gaap_PaymentsForCapitalImprovements (9,115)us-gaap_PaymentsForCapitalImprovements
Proceeds from dispositions of properties 17,424us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment 220us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment
Leasing costs paid (1,935)us-gaap_PaymentsForLeasingCosts (4,422)us-gaap_PaymentsForLeasingCosts
Increase in prepaid expenses and other assets associated with investing activities (5,782)ofc_IncreaseDecreaseinPrepaidExpensesandOtherAssetsUsedinInvestingActivities (450)ofc_IncreaseDecreaseinPrepaidExpensesandOtherAssetsUsedinInvestingActivities
Other (174)us-gaap_PaymentsForProceedsFromOtherInvestingActivities (106)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
Net cash used in investing activities (118,386)us-gaap_NetCashProvidedByUsedInInvestingActivities (60,855)us-gaap_NetCashProvidedByUsedInInvestingActivities
Proceeds from debt    
Revolving Credit Facility 150,000us-gaap_ProceedsFromLongTermLinesOfCredit 0us-gaap_ProceedsFromLongTermLinesOfCredit
Other debt proceeds 0us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt 5,700us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt
Repayments of debt    
Revolving Credit Facility (69,000)us-gaap_RepaymentsOfLongTermLinesOfCredit 0us-gaap_RepaymentsOfLongTermLinesOfCredit
Scheduled principal amortization (1,649)ofc_ScheduledPrincipalAmortizationRepaymentsOfLongTermDebt (1,855)ofc_ScheduledPrincipalAmortizationRepaymentsOfLongTermDebt
Other debt repayments (50)us-gaap_RepaymentsOfOtherLongTermDebt (50)us-gaap_RepaymentsOfOtherLongTermDebt
Net proceeds from issuance of common shares/units 28,404us-gaap_ProceedsFromIssuanceOfCommonStock 568us-gaap_ProceedsFromIssuanceOfCommonStock
Common share/unit dividends/distributions paid (25,646)us-gaap_PaymentsOfDividendsCommonStock (24,036)us-gaap_PaymentsOfDividendsCommonStock
Preferred share/unit dividends/distributions paid (3,552)us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock (4,490)us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock
Distributions paid to noncontrolling interests in COPLP (1,217)us-gaap_PaymentsOfDividendsMinorityInterest (1,253)us-gaap_PaymentsOfDividendsMinorityInterest
Redemption of vested equity awards (2,031)us-gaap_PaymentsForRepurchaseOfCommonStock (1,092)us-gaap_PaymentsForRepurchaseOfCommonStock
Other (411)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities (174)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
Net cash provided by (used in) financing activities 74,848us-gaap_NetCashProvidedByUsedInFinancingActivities (26,682)us-gaap_NetCashProvidedByUsedInFinancingActivities
Net decrease in cash and cash equivalents (1,648)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease (35,999)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents    
Beginning of period 6,077us-gaap_CashAndCashEquivalentsAtCarryingValue 54,373us-gaap_CashAndCashEquivalentsAtCarryingValue
End of period 4,429us-gaap_CashAndCashEquivalentsAtCarryingValue 18,374us-gaap_CashAndCashEquivalentsAtCarryingValue
Reconciliation of net income to net cash provided by operating activities:    
Net income 14,735us-gaap_ProfitLoss 5,671us-gaap_ProfitLoss
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and other amortization 32,091us-gaap_DepreciationDepletionAndAmortization 44,101us-gaap_DepreciationDepletionAndAmortization
Impairment losses 233us-gaap_ImpairmentOfRealEstate 1us-gaap_ImpairmentOfRealEstate
Amortization of deferred financing costs 990us-gaap_AmortizationOfFinancingCosts 1,167us-gaap_AmortizationOfFinancingCosts
(Increase) decrease in deferred rent receivable (1,746)us-gaap_StraightLineRent 398us-gaap_StraightLineRent
Amortization of net debt discounts 264us-gaap_AmortizationOfDebtDiscountPremium 171us-gaap_AmortizationOfDebtDiscountPremium
(Gain) loss on sales of real estate (3,986)us-gaap_GainLossOnSaleOfProperties 4us-gaap_GainLossOnSaleOfProperties
Share-based compensation 1,552us-gaap_ShareBasedCompensation 1,555us-gaap_ShareBasedCompensation
Loss on early extinguishment of debt 0ofc_ExtinguishmentofDebtNoncashGainLoss (78)ofc_ExtinguishmentofDebtNoncashGainLoss
Other (640)us-gaap_OtherNoncashIncomeExpense (1,032)us-gaap_OtherNoncashIncomeExpense
Operating changes in assets and liabilities:    
Increase in accounts receivable (6,918)us-gaap_IncreaseDecreaseInAccountsReceivable (1,769)us-gaap_IncreaseDecreaseInAccountsReceivable
(Increase) decrease in restricted cash and marketable securities (1,577)ofc_IncreaseDecreaseInMarketableSecuritiesAndRestrictedCash 283ofc_IncreaseDecreaseInMarketableSecuritiesAndRestrictedCash
Increase in prepaid expenses and other assets (6,352)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets (494)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Increase in accounts payable, accrued expenses and other liabilities 12,704us-gaap_IncreaseDecreaseInOperatingLiabilities 4,785us-gaap_IncreaseDecreaseInOperatingLiabilities
Increase (decrease) in rents received in advance and security deposits 540ofc_IncreaseDecreaseInAdvanceRentAndSecurityDepositLiability (3,225)ofc_IncreaseDecreaseInAdvanceRentAndSecurityDepositLiability
Net cash provided by operating activities 41,890us-gaap_NetCashProvidedByUsedInOperatingActivities 51,538us-gaap_NetCashProvidedByUsedInOperatingActivities
Supplemental schedule of non-cash investing and financing activities:    
Decrease in accrued capital improvements, leasing and other investing activity costs (3,897)ofc_IncreaseDecreaseInAccruedCapitalImprovementsLeasingAndOtherInvestingActivityCosts (7,985)ofc_IncreaseDecreaseInAccruedCapitalImprovementsLeasingAndOtherInvestingActivityCosts
Liabilities assumed on acquisition of operating properties 5,265us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1 0us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1
Decrease in fair value of derivatives applied to accumulated other comprehensive loss and noncontrolling interests (2,701)ofc_IncreaseDecreaseInFairValueOfDerivativesAppliedToAoclAndNoncontrollingInterests (1,443)ofc_IncreaseDecreaseInFairValueOfDerivativesAppliedToAoclAndNoncontrollingInterests
Dividends/distributions payable 30,174us-gaap_DividendsPayableCurrentAndNoncurrent 29,122us-gaap_DividendsPayableCurrentAndNoncurrent
Decrease in noncontrolling interests and increase in shareholders’ equity in connection with the conversion of common units into common shares 2,122ofc_EquityChangeStockIssuedDuringPeriodValueConversionOfUnits 651ofc_EquityChangeStockIssuedDuringPeriodValueConversionOfUnits
Adjustments to noncontrolling interests resulting from changes in COPLP ownership 475ofc_EquityChangeAdjustmentsToAdditionalPaidInCapitalReallocationOfMinorityInterest 69ofc_EquityChangeAdjustmentsToAdditionalPaidInCapitalReallocationOfMinorityInterest
Increase (decrease) in redeemable noncontrolling interest and decrease (increase) in equity to carry redeemable noncontrolling interest at fair value 73us-gaap_MinorityInterestChangeInRedemptionValue (540)us-gaap_MinorityInterestChangeInRedemptionValue
Corporate Office Properties, L.P.    
Cash flows from operating activities    
Revenues from real estate operations received 117,521ofc_RevenuesFromRealEstateOperationsReceived
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
116,386ofc_RevenuesFromRealEstateOperationsReceived
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Construction contract and other service revenues received 19,968ofc_ConstructionContractAndOtherServiceRevenuesReceived
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
17,289ofc_ConstructionContractAndOtherServiceRevenuesReceived
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Property operating expenses paid (42,768)ofc_PropertyOperatingExpensesPaid
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(42,739)ofc_PropertyOperatingExpensesPaid
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Construction contract and other service expenses paid (27,853)ofc_ConstructionContractAndOtherServiceExpensesPaid
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(11,397)ofc_ConstructionContractAndOtherServiceExpensesPaid
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
General, administrative, leasing, business development and land carry costs paid (12,728)ofc_GeneralAndAdministrativeAndLeasingAndBusinessDevelopmentExpensesPaid
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(9,906)ofc_GeneralAndAdministrativeAndLeasingAndBusinessDevelopmentExpensesPaid
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Interest expense paid (12,795)us-gaap_InterestPaidNet
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(18,403)us-gaap_InterestPaidNet
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Payments in connection with early extinguishment of debt (3)us-gaap_PaymentsOfDebtExtinguishmentCosts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(101)us-gaap_PaymentsOfDebtExtinguishmentCosts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Interest and other income received 556ofc_InterestAndOtherIncomeReceived
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
217ofc_InterestAndOtherIncomeReceived
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Income taxes (paid) refunded (8)us-gaap_IncomeTaxesPaidNet
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
192us-gaap_IncomeTaxesPaidNet
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net cash provided by operating activities 41,890us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
51,538us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Cash flows from investing activities    
Acquisitions of operating properties (56,622)us-gaap_PaymentsToAcquireCommercialRealEstate
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0us-gaap_PaymentsToAcquireCommercialRealEstate
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Construction, development and redevelopment (62,057)us-gaap_PaymentsToDevelopRealEstateAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(42,625)us-gaap_PaymentsToDevelopRealEstateAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Tenant improvements on operating properties (5,520)us-gaap_PaymentsForTenantImprovements
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(4,357)us-gaap_PaymentsForTenantImprovements
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Other capital improvements on operating properties (3,720)us-gaap_PaymentsForCapitalImprovements
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(9,115)us-gaap_PaymentsForCapitalImprovements
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Proceeds from dispositions of properties 17,424us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
220us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Leasing costs paid (1,935)us-gaap_PaymentsForLeasingCosts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(4,422)us-gaap_PaymentsForLeasingCosts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Increase in prepaid expenses and other assets associated with investing activities (5,782)ofc_IncreaseDecreaseinPrepaidExpensesandOtherAssetsUsedinInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(450)ofc_IncreaseDecreaseinPrepaidExpensesandOtherAssetsUsedinInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Other (174)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(106)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net cash used in investing activities (118,386)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(60,855)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Proceeds from debt    
Revolving Credit Facility 150,000us-gaap_ProceedsFromLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0us-gaap_ProceedsFromLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Other debt proceeds 0us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
5,700us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Repayments of debt    
Revolving Credit Facility (69,000)us-gaap_RepaymentsOfLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0us-gaap_RepaymentsOfLongTermLinesOfCredit
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Scheduled principal amortization (1,649)ofc_ScheduledPrincipalAmortizationRepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(1,855)ofc_ScheduledPrincipalAmortizationRepaymentsOfLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Other debt repayments (50)us-gaap_RepaymentsOfOtherLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(50)us-gaap_RepaymentsOfOtherLongTermDebt
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net proceeds from issuance of common shares/units 28,404us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
568us-gaap_ProceedsFromIssuanceOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Common share/unit dividends/distributions paid (26,698)us-gaap_PaymentsOfDividendsCommonStock
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(25,124)us-gaap_PaymentsOfDividendsCommonStock
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Preferred share/unit dividends/distributions paid (3,717)us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(4,655)us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Redemption of vested equity awards (2,031)us-gaap_PaymentsForRepurchaseOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(1,092)us-gaap_PaymentsForRepurchaseOfCommonStock
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Other (411)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(174)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net cash provided by (used in) financing activities 74,848us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(26,682)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net decrease in cash and cash equivalents (1,648)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(35,999)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Cash and cash equivalents    
Beginning of period 6,077us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
54,373us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
End of period 4,429us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
18,374us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Reconciliation of net income to net cash provided by operating activities:    
Net income 14,735us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
5,671us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and other amortization 32,091us-gaap_DepreciationDepletionAndAmortization
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
44,101us-gaap_DepreciationDepletionAndAmortization
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Impairment losses 233us-gaap_ImpairmentOfRealEstate
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
1us-gaap_ImpairmentOfRealEstate
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Amortization of deferred financing costs 990us-gaap_AmortizationOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
1,167us-gaap_AmortizationOfFinancingCosts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(Increase) decrease in deferred rent receivable (1,746)us-gaap_StraightLineRent
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
398us-gaap_StraightLineRent
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Amortization of net debt discounts 264us-gaap_AmortizationOfDebtDiscountPremium
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
171us-gaap_AmortizationOfDebtDiscountPremium
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(Gain) loss on sales of real estate (3,986)us-gaap_GainLossOnSaleOfProperties
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
4us-gaap_GainLossOnSaleOfProperties
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Share-based compensation 1,552us-gaap_ShareBasedCompensation
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
1,555us-gaap_ShareBasedCompensation
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Loss on early extinguishment of debt 0ofc_ExtinguishmentofDebtNoncashGainLoss
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(78)ofc_ExtinguishmentofDebtNoncashGainLoss
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Other (640)us-gaap_OtherNoncashIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(1,032)us-gaap_OtherNoncashIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Operating changes in assets and liabilities:    
Increase in accounts receivable (6,918)us-gaap_IncreaseDecreaseInAccountsReceivable
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(1,769)us-gaap_IncreaseDecreaseInAccountsReceivable
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(Increase) decrease in restricted cash and marketable securities (1,523)ofc_IncreaseDecreaseInMarketableSecuritiesAndRestrictedCash
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
381ofc_IncreaseDecreaseInMarketableSecuritiesAndRestrictedCash
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Increase in prepaid expenses and other assets (6,352)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(494)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Increase in accounts payable, accrued expenses and other liabilities 12,650us-gaap_IncreaseDecreaseInOperatingLiabilities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
4,687us-gaap_IncreaseDecreaseInOperatingLiabilities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Increase (decrease) in rents received in advance and security deposits 540ofc_IncreaseDecreaseInAdvanceRentAndSecurityDepositLiability
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(3,225)ofc_IncreaseDecreaseInAdvanceRentAndSecurityDepositLiability
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Net cash provided by operating activities 41,890us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
51,538us-gaap_NetCashProvidedByUsedInOperatingActivities
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Supplemental schedule of non-cash investing and financing activities:    
Decrease in accrued capital improvements, leasing and other investing activity costs (3,897)ofc_IncreaseDecreaseInAccruedCapitalImprovementsLeasingAndOtherInvestingActivityCosts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(7,985)ofc_IncreaseDecreaseInAccruedCapitalImprovementsLeasingAndOtherInvestingActivityCosts
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Liabilities assumed on acquisition of operating properties 5,265us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
0us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Decrease in fair value of derivatives applied to accumulated other comprehensive loss and noncontrolling interests (2,701)ofc_IncreaseDecreaseInFairValueOfDerivativesAppliedToAoclAndNoncontrollingInterests
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
(1,443)ofc_IncreaseDecreaseInFairValueOfDerivativesAppliedToAoclAndNoncontrollingInterests
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Dividends/distributions payable 30,174us-gaap_DividendsPayableCurrentAndNoncurrent
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
29,122us-gaap_DividendsPayableCurrentAndNoncurrent
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
Increase (decrease) in redeemable noncontrolling interest and decrease (increase) in equity to carry redeemable noncontrolling interest at fair value $ 73us-gaap_MinorityInterestChangeInRedemptionValue
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
$ (540)us-gaap_MinorityInterestChangeInRedemptionValue
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember