XML 58 R72.htm IDEA: XBRL DOCUMENT v2.4.1.9
Benefit Plans - Additional Information (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended 0 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2010
Jan. 08, 2010
Dec. 31, 2008
Dec. 31, 2011
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]              
Common Stock, Shares Held in Employee Trust, Shares 427,531us-gaap_CommonStockSharesHeldInEmployeeTrustShares 427,531us-gaap_CommonStockSharesHeldInEmployeeTrustShares          
Common share options granted (shares) 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross        
Recognized compensation expense $ 1,038us-gaap_StockOptionPlanExpense $ 1,037us-gaap_StockOptionPlanExpense $ 1,197us-gaap_StockOptionPlanExpense        
Exercises in period, intrinsic value 2,780us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue 8,607us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue 1,603us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue        
Options, exercisable, intrinsic value 4,557us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1            
Initial vesting percentage 25.00%lxp_InitialVestingPercentage            
Vesting percentage 100.00%lxp_VestingPercentage            
Cost recognized 299us-gaap_DefinedContributionPlanCostRecognized 298us-gaap_DefinedContributionPlanCostRecognized 279us-gaap_DefinedContributionPlanCostRecognized        
Allocated share-based compensation expense 7,550us-gaap_AllocatedShareBasedCompensationExpense 7,145us-gaap_AllocatedShareBasedCompensationExpense 3,030us-gaap_AllocatedShareBasedCompensationExpense        
Non-vested Shares [Member]              
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]              
Unrecognized compensation costs 15,183us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= lxp_NonVestedSharesMember		            
Non-options, nonvested, number 1,970,385us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= lxp_NonVestedSharesMember		 2,521,046us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= lxp_NonVestedSharesMember		 1,465,446us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= lxp_NonVestedSharesMember		        
Number of shares available for grant 4,012,252us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_AwardTypeAxis
= lxp_NonVestedSharesMember		            
Total compensation cost not yet recognized, period for recognition 4 years            
Options 2010 [Member]              
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]              
Common share options granted (shares)       1,248,501us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= lxp_Options2010Member		      
Common share options exercise price (usd per share)       $ 7.95us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lxp_Options2010Member		      
Deferred compensation equity 2,422us-gaap_DeferredCompensationEquity
/ us-gaap_AwardTypeAxis
= lxp_Options2010Member		            
Options 2009 [Member]              
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]              
Common share options granted (shares)         1,265,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= lxp_Options2009Member		    
Common share options exercise price (usd per share)         $ 6.39us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lxp_Options2009Member		    
Vesting rate         20.00%lxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingRate
/ us-gaap_AwardTypeAxis
= lxp_Options2009Member		    
Deferred compensation equity 2,771us-gaap_DeferredCompensationEquity
/ us-gaap_AwardTypeAxis
= lxp_Options2009Member		            
Recognized compensation expense average period 5 years            
Options 2008 [Member]              
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]              
Common share options granted (shares)           2,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= lxp_Options2008Member		  
Common share options exercise price (usd per share)           $ 5.60us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= lxp_Options2008Member		  
Number of trading period days           20 days  
Options convertible to common shares           1.13lxp_ShareBasedCompensationArrangementbyShareBasedPaymentAwardOptionsConvertibleToCommonShares
/ us-gaap_AwardTypeAxis
= lxp_Options2008Member		  
Options converted to common shares exercise price           $ 4.97lxp_OptionsConvertedToCommonSharesExercisePrice
/ us-gaap_AwardTypeAxis
= lxp_Options2008Member		  
Deferred compensation equity 2,480us-gaap_DeferredCompensationEquity
/ us-gaap_AwardTypeAxis
= lxp_Options2008Member		            
Recognized compensation expense average period 3 years 7 months 6 days            
Options 2008 [Member] | Minimum [Member]              
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]              
Average closing price, lower limit           $ 8lxp_StatedLowerAmountWhereEntitysAverageClosingPricePerCommonShareIsGreaterThanTheStatedAmountTriggering
/ us-gaap_AwardTypeAxis
= lxp_Options2008Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Options 2008 [Member] | Maximum [Member]              
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]              
Average closing price, lower limit           $ 10lxp_StatedLowerAmountWhereEntitysAverageClosingPricePerCommonShareIsGreaterThanTheStatedAmountTriggering
/ us-gaap_AwardTypeAxis
= lxp_Options2008Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Options 2008 [Member] | Share Based Compensation Arrangement By Share Based Payment Award Vesting Rate First Vesting Trigger [Member]              
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]              
Vesting rate           50.00%lxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingRate
/ us-gaap_AwardTypeAxis
= lxp_Options2008Member
/ lxp_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardVestingAxis
= lxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingRateFirstVestingTriggerMember		  
Employee Stock Option [Member]              
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]              
Common share options exercise price (usd per share) $ 7.05us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 $ 6.95us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 $ 6.44us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		       $ 6.36us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
Vesting rate       20.00%lxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		      
Unrecognized compensation costs $ 480us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		            
Shares Subject to Time [Member]              
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]              
Non-options, nonvested, number 1,895,245us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= lxp_SharesSubjectToTimeMember		            
Shares Subject to Performance [Member]              
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]              
Non-options, nonvested, number 75,140us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= lxp_SharesSubjectToPerformanceMember