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Basis of Presentation (Details)
3 Months Ended 9 Months Ended
Jan. 24, 2015
Jan. 24, 2015
Basis of Presentation    
Improvement in gross margin due to legal settlement (as a percent) 1.50%lzb_PercentageOfGrossMarginImprovedDueToLegalSettlement 0.50%lzb_PercentageOfGrossMarginImprovedDueToLegalSettlement