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Share-Based Compensation (Details) - Information about stock options outstanding and exercisable (USD $)
 12 Months Ended
Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Weighted Average Exercise Price $ 16.25tlx_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingAndExercisableOptionsWeightedAverageExercisePrice
Number Outstanding and Exercisable (in Shares) 40tlx_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingAndExercisableOptions
Weighted Average Remaining Contractual Life 1 year
Aggre-gate Intrinsic Value (in Dollars)   
Exercise Price $16.25 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Weighted Average Exercise Price $ 16.25tlx_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingAndExercisableOptionsWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= tlx_ExercisePrice16.25Member
Number Outstanding and Exercisable (in Shares) 40tlx_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingAndExercisableOptions
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= tlx_ExercisePrice16.25Member
Weighted Average Remaining Contractual Life 1 year
Aggre-gate Intrinsic Value (in Dollars)