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Statements of Comprehensive Loss Parentheticals (Parentheticals) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Stock-based compensation expense associated with research and development expense | $ 4,376 | $ 3,673 | $ 3,249
Stock-based compensation expense associated with general and administrative expense | $ 3,045 | $ 2,822 | $ 2,458

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- Definition Stock-based compensation expense associated with general and administrative expense. + References No definition available. + Details
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Balance Type: | debit
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- Definition Stock-based compensation expense included in research and development expense. + References No definition available. + Details
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Namespace Prefix: | lxrx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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