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Earnings Per Share (Details) (USD $) In Thousands, except 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 | Dec. 31, 2010
BASIC |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations attributable to common shareholders |  |  |  |  |  |  |  |  | $ 37,652 lxp_IncomeLossFromContinuingOperationsAttributableToCommonShareholders | $ (38,506)lxp_IncomeLossFromContinuingOperationsAttributableToCommonShareholders | $ 157,974 lxp_IncomeLossFromContinuingOperationsAttributableToCommonShareholders |
Income (loss) from discontinued operations attributable to common shareholders |  |  |  |  |  |  |  |  | 48,672 lxp_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToCommonShareholders | 24,417 lxp_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToCommonShareholders | (1,163)lxp_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToCommonShareholders |
Net income (loss) attributable to common shareholders |  |  |  |  |  |  |  |  | 86,324 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (14,089)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 156,811 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |
Weighted-average common shares outstanding – basic |  |  |  |  |  |  |  |  | 228,966,253 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 209,797,238 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 159,109,424 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |
Income (loss) from continuing operations, basic (usd per share) |  |  |  |  |  |  |  |  | $ 0.17 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ (0.18)us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.99 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare |
Income (loss) from discontinued operations, basic (usd per share) |  |  |  |  |  |  |  |  | $ 0.21 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.11 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare |
Net income (loss) attributable to common shareholders, basic (usd per share) | $ 0.15 us-gaap_EarningsPerShareBasic | $ 0.17 us-gaap_EarningsPerShareBasic | $ 0.05 us-gaap_EarningsPerShareBasic | $ 0.00 us-gaap_EarningsPerShareBasic | $ (0.04)us-gaap_EarningsPerShareBasic | $ 0.01 us-gaap_EarningsPerShareBasic | $ 0.00 us-gaap_EarningsPerShareBasic | $ (0.04)us-gaap_EarningsPerShareBasic | $ 0.38 us-gaap_EarningsPerShareBasic | $ (0.07)us-gaap_EarningsPerShareBasic | $ 0.99 us-gaap_EarningsPerShareBasic |
Impact of assumed conversions: |  |  |  |  |  |  |  |  |  |  |  |
Share Options |  |  |  |  |  |  |  |  | 0 us-gaap_AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits | 0 us-gaap_AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits | 0 us-gaap_AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits |
Operating Partnership Units |  |  |  |  |  |  |  |  | 0 lxp_DilutiveSecuritiesEffectOnBasicEarningsPerShareOperatingPartnershipUnits | 0 lxp_DilutiveSecuritiesEffectOnBasicEarningsPerShareOperatingPartnershipUnits | 1,490 lxp_DilutiveSecuritiesEffectOnBasicEarningsPerShareOperatingPartnershipUnits |
6.00% Convertible Guaranteed Notes |  |  |  |  |  |  |  |  | 0 lxp_DilutiveSecuritiesEffectOnBasicEarningsPerShareConvertibleNotes | 0 lxp_DilutiveSecuritiesEffectOnBasicEarningsPerShareConvertibleNotes | 8,953 lxp_DilutiveSecuritiesEffectOnBasicEarningsPerShareConvertibleNotes |
Income (loss) from continuing operations attributable to common shareholders |  |  |  |  |  |  |  |  | 37,652 lxp_LossFromContinuingOperationsAttributableToCommonShareholdersNetOfDeductions | (38,506)lxp_LossFromContinuingOperationsAttributableToCommonShareholdersNetOfDeductions | 168,417 lxp_LossFromContinuingOperationsAttributableToCommonShareholdersNetOfDeductions |
Income (loss) from discontinued operations |  |  |  |  |  |  |  |  | 48,672 lxp_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToCommonShareholders | 24,417 lxp_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToCommonShareholders | (1,163)lxp_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToCommonShareholders |
Operating Partnership Units |  |  |  |  |  |  |  |  | 0 lxp_IncrementalCommonSharesAttributableToOperatingPartnershipUnitsDiscontinuedOperations | 0 lxp_IncrementalCommonSharesAttributableToOperatingPartnershipUnitsDiscontinuedOperations | (297)lxp_IncrementalCommonSharesAttributableToOperatingPartnershipUnitsDiscontinuedOperations |
Income (loss) from discontinued operations attributable to common shareholders |  |  |  |  |  |  |  |  | 48,672 lxp_IncomeLossFromDiscontinuedOperationsAttributableToCommonShareholdersNetOfDeductions | 24,417 lxp_IncomeLossFromDiscontinuedOperationsAttributableToCommonShareholdersNetOfDeductions | (1,460)lxp_IncomeLossFromDiscontinuedOperationsAttributableToCommonShareholdersNetOfDeductions |
Net income (loss) attributable to common shareholders |  |  |  |  |  |  |  |  | $ 86,324 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted | $ (14,089)us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted | $ 166,957 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted |
Weighted-average common shares outstanding - basic |  |  |  |  |  |  |  |  | 228,966,253 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 209,797,238 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 159,109,424 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Share Options |  |  |  |  |  |  |  |  | 470,455 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements | 0 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements | 306,449 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements |
Operating Partnership Units |  |  |  |  |  |  |  |  | 0 lxp_IncrementalCommonSharesAttributableToOperatingPartnershipUnits | 0 lxp_IncrementalCommonSharesAttributableToOperatingPartnershipUnits | 4,438,708 lxp_IncrementalCommonSharesAttributableToOperatingPartnershipUnits |
6.00% Convertible Guaranteed Notes |  |  |  |  |  |  |  |  | 0 us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock | 0 us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock | 15,805,245 us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock |
Weighted-average common shares outstanding |  |  |  |  |  |  |  |  | 229,436,708 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 209,797,238 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 179,659,826 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding |
Income (loss) per common share: |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations, diluted (usd per share) |  |  |  |  |  |  |  |  | $ 0.17 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ (0.18)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.94 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare |
Income (loss) from discontinued operations, diluted (usd per share) |  |  |  |  |  |  |  |  | $ 0.21 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.11 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ (0.01)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare |
Net income (loss) attributable to common shareholders - diluted per share | $ 0.15 us-gaap_EarningsPerShareDiluted | $ 0.17 us-gaap_EarningsPerShareDiluted | $ 0.05 us-gaap_EarningsPerShareDiluted | $ 0.00 us-gaap_EarningsPerShareDiluted | $ (0.04)us-gaap_EarningsPerShareDiluted | $ 0.01 us-gaap_EarningsPerShareDiluted | $ 0.00 us-gaap_EarningsPerShareDiluted | $ (0.04)us-gaap_EarningsPerShareDiluted | $ 0.38 us-gaap_EarningsPerShareDiluted | $ (0.07)us-gaap_EarningsPerShareDiluted | $ 0.93 us-gaap_EarningsPerShareDiluted |
6.00% Convertible Guaranteed Note [Member] |  |  |  |  |  |  |  |  |  |  |  |
Impact of assumed conversions: |  |  |  |  |  |  |  |  |  |  |  |
Debt interest rate percentage | 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = lxp_SixPercentConvertibleGuaranteedNoteMember |  |  |  | 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = lxp_SixPercentConvertibleGuaranteedNoteMember |  |  |  | 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = lxp_SixPercentConvertibleGuaranteedNoteMember | 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = lxp_SixPercentConvertibleGuaranteedNoteMember | 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = lxp_SixPercentConvertibleGuaranteedNoteMember | 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = lxp_SixPercentConvertibleGuaranteedNoteMember

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