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Earnings per Share - Reconciliation (Details) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 28, 2017 | Oct. 29, 2016 | Oct. 28, 2017 | Oct. 29, 2016
Numerator (basic and diluted): |  |  |  |
Net income attributable to La-Z-Boy Incorporated | $ 22,896 | $ 20,833 | $ 34,547 | $ 34,639
Income allocated to participating securities, basic | (117) | (103) | (172) | (172)
Income allocated to participating securities, diluted | (117) | (103) | (172) | (172)
Net income available to common shareholders, basic | 22,779 | 20,730 | 34,375 | 34,467
Net income available to common shareholders, diluted | $ 22,779 | $ 20,730 | $ 34,375 | $ 34,467
Denominator |  |  |  |
Basic weighted average common shares outstanding (in shares) | 47,964 | 49,153 | 48,160 | 49,129
Add: |  |  |  |
Contingent common shares (in shares) | 96 | 100 | 99 | 100
Stock option dilution (in shares) | 237 | 258 | 278 | 325
Diluted weighted average common shares outstanding (in shares) | 48,297 | 49,511 | 48,537 | 49,554

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