Earnings per Share - Reconciliation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jul. 25, 2020	Jul. 27, 2019
Numerator (basic and diluted):
Net income attributable to La-Z-Boy Incorporated	$ 4,798	$ 18,069
Income allocated to participating securities	(4)	(39)
Net income available to common Shareholders	$ 4,794	$ 18,030
Denominator:
Basic weighted average common shares outstanding (in shares)	45,909	46,820
Add:
Contingent common shares (in shares)	47	130
Stock option dilution (in shares)	9	175
Diluted weighted average common shares outstanding (in shares)	45,965	47,125
Basic (in dollars per share)	$ 0.10	$ 0.39
Diluted (in dollars per share)	$ 0.10	$ 0.38