XML 115 R95.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Earnings Per Share ("EPS") and Earnings Per Unit (“EPU”) (Details) (USD $) In Thousands, except Per Share data, 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
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations | $ 5,874 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | $ 13,727 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | $ 9,248 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | $ 5,660 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | $ 14,432 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | $ 10,974 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | $ (232)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | $ 11,662 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | $ 34,509 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest |  | $ 36,836 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest |  | $ 7,967 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest |
Gain on sales of real estate, net |  |  |  |  |  |  |  |  | 10,671 us-gaap_GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes |  | 9,016 us-gaap_GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes |  | 21 us-gaap_GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes |
Preferred share/ unit dividends/ distributions | (3,552)us-gaap_PreferredStockDividendsIncomeStatementImpact | (3,553)us-gaap_PreferredStockDividendsIncomeStatementImpact | (4,344)us-gaap_PreferredStockDividendsIncomeStatementImpact | (4,490)us-gaap_PreferredStockDividendsIncomeStatementImpact | (4,490)us-gaap_PreferredStockDividendsIncomeStatementImpact | (4,490)us-gaap_PreferredStockDividendsIncomeStatementImpact | (4,885)us-gaap_PreferredStockDividendsIncomeStatementImpact | (6,106)us-gaap_PreferredStockDividendsIncomeStatementImpact | (15,939)us-gaap_PreferredStockDividendsIncomeStatementImpact |  | (19,971)us-gaap_PreferredStockDividendsIncomeStatementImpact |  | (20,844)us-gaap_PreferredStockDividendsIncomeStatementImpact |
Issuance costs associated with redeemed preferred shares | 0 us-gaap_OtherPreferredStockDividendsAndAdjustments | 0 us-gaap_OtherPreferredStockDividendsAndAdjustments | (1,769)us-gaap_OtherPreferredStockDividendsAndAdjustments | 0 us-gaap_OtherPreferredStockDividendsAndAdjustments | 0 us-gaap_OtherPreferredStockDividendsAndAdjustments | 0 us-gaap_OtherPreferredStockDividendsAndAdjustments | (2,904)us-gaap_OtherPreferredStockDividendsAndAdjustments | 0 us-gaap_OtherPreferredStockDividendsAndAdjustments | (1,769)us-gaap_OtherPreferredStockDividendsAndAdjustments |  | (2,904)us-gaap_OtherPreferredStockDividendsAndAdjustments |  | (1,827)us-gaap_OtherPreferredStockDividendsAndAdjustments |
(Income) loss from continuing operations attributable to noncontrolling interests |  |  |  |  |  |  |  |  | (4,955)us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity |  | (4,486)us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity |  | 1,309 us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity |
Income from continuing operations attributable to restricted units |  |  |  |  |  |  |  |  | (432)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic |  | (414)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic |  | (469)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic |
Numerator for basic and diluted EPS/EPU from continuing operations attributable to COPT/COPLP common shareholders/unitholders |  |  |  |  |  |  |  |  | 22,085 ofc_NetIncomeLossfromContinuingOperationsAvailabletoCommonStockholdersBasicandDiluted |  | 18,077 ofc_NetIncomeLossfromContinuingOperationsAvailabletoCommonStockholdersBasicandDiluted |  | (13,843)ofc_NetIncomeLossfromContinuingOperationsAvailabletoCommonStockholdersBasicandDiluted |
Discontinued operations | 22 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 191 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | (198)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 11 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 71,907 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | (12,974)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | (4,502)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 1,261 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 26 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  | 55,692 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  | 12,353 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |
Discontinued operations attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 4 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest |  | (3,351)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest |  | (673)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest |
Numerator for basic and diluted EPS/EPU on net income (loss)attributable to COPT/COPLP common shareholders/common unitholders |  |  |  |  |  |  |  |  | 22,115 ofc_NetIncomeLossAttributabletoCommonStockholdersBasicandDiluted |  | 70,418 ofc_NetIncomeLossAttributabletoCommonStockholdersBasicandDiluted |  | (2,163)ofc_NetIncomeLossAttributabletoCommonStockholdersBasicandDiluted |
Denominator (all weighted averages): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic EPS (common shares) |  |  |  |  |  |  |  |  | 88,092 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |  | 85,167 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |  | 73,454 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |
Dilutive effect of share-based compensation awards |  |  |  |  |  |  |  |  | 171 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements |  | 57 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements |  | 0 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements |
Denominator for basic and diluted EPS (common shares) |  |  |  |  |  |  |  |  | 88,263 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding |  | 85,224 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding |  | 73,454 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding |
Basic EPS: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations (in dollars per share/unit) |  |  |  |  |  |  |  |  | $ 0.25 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | [1] | $ 0.21 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | [1] | $ (0.19)us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | [1]
Discontinued operations (in dollars per share/unit) |  |  |  |  |  |  |  |  | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | [1] | $ 0.62 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | [1] | $ 0.16 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | [1]
Net income (loss) attributable to COPT common shareholders (in dollars per share/unit) | $ 0.01 us-gaap_EarningsPerShareBasic | $ 0.22 us-gaap_EarningsPerShareBasic | $ 0.02 us-gaap_EarningsPerShareBasic | $ 0.00 us-gaap_EarningsPerShareBasic | $ 0.94 us-gaap_EarningsPerShareBasic | $ (0.09)us-gaap_EarningsPerShareBasic | $ (0.16)us-gaap_EarningsPerShareBasic | $ 0.11 us-gaap_EarningsPerShareBasic | $ 0.25 us-gaap_EarningsPerShareBasic | [1] | $ 0.83 us-gaap_EarningsPerShareBasic | [1] | $ (0.03)us-gaap_EarningsPerShareBasic | [1]
Diluted EPS: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations (in dollars per share/unit) |  |  |  |  |  |  |  |  | $ 0.25 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | [1] | $ 0.21 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | [1] | $ (0.19)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | [1]
Discontinued operations (in dollars per share/unit) |  |  |  |  |  |  |  |  | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | [1] | $ 0.62 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | [1] | $ 0.16 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | [1]
Net income (loss) attributable to COPT common shareholders (in dollars per share/unit) | $ 0.01 us-gaap_EarningsPerShareDiluted | $ 0.22 us-gaap_EarningsPerShareDiluted | $ 0.02 us-gaap_EarningsPerShareDiluted | $ 0.00 us-gaap_EarningsPerShareDiluted | $ 0.94 us-gaap_EarningsPerShareDiluted | $ (0.09)us-gaap_EarningsPerShareDiluted | $ (0.16)us-gaap_EarningsPerShareDiluted | $ 0.11 us-gaap_EarningsPerShareDiluted | $ 0.25 us-gaap_EarningsPerShareDiluted | [1] | $ 0.83 us-gaap_EarningsPerShareDiluted | [1] | $ (0.03)us-gaap_EarningsPerShareDiluted | [1]
Corporate Office Properties, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations | 5,874 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 13,727 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 9,248 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 5,660 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 14,432 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 10,974 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (232)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 11,662 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 34,509 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 36,836 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 7,967 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Gain on sales of real estate, net |  |  |  |  |  |  |  |  | 10,671 us-gaap_GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 9,016 us-gaap_GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 21 us-gaap_GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Preferred share/ unit dividends/ distributions | (3,717)us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (3,718)us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (4,509)us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (4,655)us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (4,655)us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (4,655)us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (5,050)us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (6,271)us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (16,599)us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (20,631)us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (21,504)us-gaap_PreferredStockDividendsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Issuance costs associated with redeemed preferred shares | 0 us-gaap_OtherPreferredStockDividendsAndAdjustments / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 0 us-gaap_OtherPreferredStockDividendsAndAdjustments / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (1,769)us-gaap_OtherPreferredStockDividendsAndAdjustments / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 0 us-gaap_OtherPreferredStockDividendsAndAdjustments / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 0 us-gaap_OtherPreferredStockDividendsAndAdjustments / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 0 us-gaap_OtherPreferredStockDividendsAndAdjustments / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (2,904)us-gaap_OtherPreferredStockDividendsAndAdjustments / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 0 us-gaap_OtherPreferredStockDividendsAndAdjustments / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (1,769)us-gaap_OtherPreferredStockDividendsAndAdjustments / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (2,904)us-gaap_OtherPreferredStockDividendsAndAdjustments / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (1,827)us-gaap_OtherPreferredStockDividendsAndAdjustments / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
(Income) loss from continuing operations attributable to noncontrolling interests |  |  |  |  |  |  |  |  | (3,281)us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (2,977)us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 1,206 us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Income from continuing operations attributable to restricted units |  |  |  |  |  |  |  |  | (432)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (414)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (469)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Numerator for basic and diluted EPS/EPU from continuing operations attributable to COPT/COPLP common shareholders/unitholders |  |  |  |  |  |  |  |  | 23,099 ofc_NetIncomeLossfromContinuingOperationsAvailabletoCommonStockholdersBasicandDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 18,926 ofc_NetIncomeLossfromContinuingOperationsAvailabletoCommonStockholdersBasicandDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (14,606)ofc_NetIncomeLossfromContinuingOperationsAvailabletoCommonStockholdersBasicandDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Discontinued operations | 22 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 191 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (198)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 11 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 71,907 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (12,974)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (4,502)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 1,261 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 26 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 55,692 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 12,353 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Discontinued operations attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 5 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (930)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (699)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Numerator for basic and diluted EPS/EPU on net income (loss)attributable to COPT/COPLP common shareholders/common unitholders |  |  |  |  |  |  |  |  | $ 23,130 ofc_NetIncomeLossAttributabletoCommonStockholdersBasicandDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | $ 73,688 ofc_NetIncomeLossAttributabletoCommonStockholdersBasicandDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | $ (2,952)ofc_NetIncomeLossAttributabletoCommonStockholdersBasicandDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Denominator (all weighted averages): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic EPS (common shares) |  |  |  |  |  |  |  |  | 91,989 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 89,036 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 77,689 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Dilutive effect of share-based compensation awards |  |  |  |  |  |  |  |  | 171 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 57 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 0 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Denominator for basic and diluted EPS (common shares) |  |  |  |  |  |  |  |  | 92,160 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 89,093 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 77,689 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Basic EPS: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations (in dollars per share/unit) |  |  |  |  |  |  |  |  | $ 0.25 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2] | $ 0.21 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2] | $ (0.19)us-gaap_IncomeLossFromContinuingOperationsPerBasicShare / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2]
Discontinued operations (in dollars per share/unit) |  |  |  |  |  |  |  |  | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2] | $ 0.62 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2] | $ 0.15 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2]
Net income (loss) attributable to COPT common shareholders (in dollars per share/unit) | $ 0.01 us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.22 us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.02 us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.00 us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.94 us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ (0.09)us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ (0.16)us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.11 us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.25 us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2] | $ 0.83 us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2] | $ (0.04)us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2]
Diluted EPS: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations (in dollars per share/unit) |  |  |  |  |  |  |  |  | $ 0.25 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2] | $ 0.21 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2] | $ (0.19)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2]
Discontinued operations (in dollars per share/unit) |  |  |  |  |  |  |  |  | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2] | $ 0.62 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2] | $ 0.15 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2]
Net income (loss) attributable to COPT common shareholders (in dollars per share/unit) | $ 0.01 us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.22 us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.02 us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.00 us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.94 us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ (0.09)us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ (0.16)us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.11 us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.25 us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2] | $ 0.83 us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2] | $ (0.04)us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [2]
[1] | Basic and diluted earnings per common share are calculated based on amounts attributable to common shareholders of Corporate Office Properties Trust.
[2] | Basic and diluted earnings per common unit are calculated based on amounts attributable to common unitholders of Corporate Office Properties, L.P.

X
- Definition Represents the net income after adjustments for gain on sales of real estate, preferred share dividends, income from continuing operations attributable to noncontrolling interests and income from continuing operations attributable to restricted shares used to calculate the basic and dilutive earnings per share. + References No definition available. + Details
Name: | ofc_NetIncomeLossAttributabletoCommonStockholdersBasicandDiluted
Namespace Prefix: | ofc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents the net income from continuing operations including gain on sales of real estate, net of income taxes, after adjustments for dividends on preferred stock and income attributable to participating securities used to calculate basic and dilutive earnings per share from continuing operations. + References No definition available. + Details
Name: | ofc_NetIncomeLossfromContinuingOperationsAvailabletoCommonStockholdersBasicandDiluted
Namespace Prefix: | ofc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=32703322&loc=d3e4984-109258 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.19) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.23) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 + Details
Name: | us-gaap_EarningsPerShareBasic
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_EarningsPerShareBasicAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 + Details
Name: | us-gaap_EarningsPerShareDiluted
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_EarningsPerShareDilutedAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the amount of gain (loss) on sale of properties during the reporting period net of the applicable income taxes realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 15 -Paragraph a -Subparagraph 1(ii) -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 974 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-15.(a)(1)(ii)) -URI http://asc.fasb.org/extlink&oid=6875705&loc=d3e641549-123027 + Details
Name: | us-gaap_GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of income (loss) from continuing operations attributable to the noncontrolling interest. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4568447-111683 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.19) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.23) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsPerBasicShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.12) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 13 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.14) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Article 5 + Details
Name: | us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents the overall income (loss) from a disposal group that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items, which is apportioned to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This item includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4568447-111683 + Details
Name: | us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.19) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.23) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 + Details
Name: | us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section E -Paragraph Question 3 + Details
Name: | us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 28A -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1500-109256 + Details
Name: | us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Other preferred stock dividends and adjustments, not otherwise defined in the taxonomy, that are necessary to adjust net income to obtain net income applicable to common stockholders. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1377-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section Q + Details
Name: | us-gaap_OtherPreferredStockDividendsAndAdjustments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of earnings (loss) distributed and earnings (loss) allocated to participating securities for the basic earnings (loss) per share or per unit calculation under the two-class method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 60B -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7655603&loc=SL5780133-109256 + Details
Name: | us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of preferred stock dividends that is an adjustment to net income apportioned to common stockholders. + References No definition available. + Details
Name: | us-gaap_PreferredStockDividendsIncomeStatementImpact
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1505-109256 + Details
Name: | us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Weighted-Average Number of Common Shares Outstanding -URI http://asc.fasb.org/extlink&oid=6528421 + Details
Name: | us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=us-gaap_SubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |