Earnings per Share - Reconciliation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 24, 2020	Oct. 26, 2019	Oct. 24, 2020	Oct. 26, 2019
Numerator (basic and diluted):
Net income attributable to La-Z-Boy Incorporated	$ 34,935	$ 22,593	$ 39,733	$ 40,662
Income allocated to participating securities	(11)	(31)	(22)	(72)
Net income available to common Shareholders	$ 34,924	$ 22,562	$ 39,711	$ 40,590
Denominator:
Basic weighted average common shares outstanding (in shares)	46,023	46,551	45,966	46,686
Add:
Contingent common shares (in shares)	148	149	127	148
Stock option dilution (in shares)	152	179	74	176
Diluted weighted average common shares outstanding (in shares)	46,323	46,879	46,167	47,010
Basic (in dollars per share)	$ 0.76	$ 0.48	$ 0.86	$ 0.87
Diluted (in dollars per share)	$ 0.75	$ 0.48	$ 0.86	$ 0.86