Earnings per Share - Reconciliation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 26, 2019	Oct. 27, 2018	Oct. 26, 2019	Oct. 27, 2018
Numerator (basic and diluted):
Net income attributable to La-Z-Boy Incorporated	$ 22,593	$ 20,012	$ 40,662	$ 38,315
Income allocated to participating securities	(31)	(63)	(72)	(139)
Net income available to common Shareholders	$ 22,562	$ 19,949	$ 40,590	$ 38,176
Denominator:
Basic weighted average common shares outstanding (in shares)	46,551	46,888	46,686	46,802
Add:
Contingent common shares (in shares)	149	85	148	85
Stock option dilution (in shares)	179	286	176	332
Diluted weighted average common shares outstanding (in shares)	46,879	47,259	47,010	47,219
Basic (in dollars per share)	$ 0.48	$ 0.43	$ 0.87	$ 0.82
Diluted (in dollars per share)	$ 0.48	$ 0.42	$ 0.86	$ 0.81