Earnings per Share - Reconciliation (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
Jul. 28, 2018	Jul. 29, 2017
Numerator (basic and diluted):
Net income attributable to La-Z-Boy Incorporated	$ 18,303	$ 11,651
Income allocated to participating securities, basic	(76)	(57)
Income allocated to participating securities, diluted	(76)	(57)
Net income available to common shareholders, basic	18,227	11,594
Net income available to common shareholders, diluted	$ 18,227	$ 11,594
Denominator
Basic weighted average common shares outstanding (in shares)	46,716	48,357
Add:
Contingent common shares (in shares)	66	175
Stock option dilution (in shares)	379	314
Diluted weighted average common shares outstanding (in shares)	47,161	48,846

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of contingently issuable shares. Contingently issuable shares are those shares that are issuable for little or no cash contingent on certain conditions being met.

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