Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Oct. 26, 2019	Jul. 27, 2019	Oct. 27, 2018	Jul. 28, 2018	Oct. 26, 2019	Oct. 27, 2018
Activity in accumulated other comprehensive loss
Beginning balance		$ 682,508			$ 682,508
Ending balance	$ 695,199				695,199
Components of non-controlling interest
Balance as of the beginning of the period	14,873	14,468	$ 12,455	$ 13,035	14,468	$ 13,035
Net income	311		337		230	985
Other comprehensive income	359		619		845	(609)
Balance as of the end of the period	15,543	14,873	13,411	12,455	15,543	13,411
ASU 2016-01 - Investments
Activity in accumulated other comprehensive loss
Reclassification of certain income tax effects				0
Translation adjustment
Activity in accumulated other comprehensive loss
Beginning balance	178	50	(573)	2,388	50	2,388
Changes before reclassifications	1,167		549		1,295	(2,412)
Other comprehensive income (loss) attributable to La-Z-Boy Incorporated	1,167		549		1,295	(2,412)
Ending balance	1,345	178	(24)	(573)	1,345	(24)
Change in fair value of cash flow hedge
Activity in accumulated other comprehensive loss
Beginning balance	(6)	87	(179)	154	87	154
Changes before reclassifications			140			(369)
Reclassification of certain income tax effects					(97)
Amounts reclassified to net income	9		65		14	132
Tax effect	(3)		(50)		(4)	59
Other comprehensive income (loss) attributable to La-Z-Boy Incorporated	6		155		(87)	(178)
Ending balance	0	(6)	(24)	(179)	0	(24)
Unrealized gain (loss) on marketable securities
Activity in accumulated other comprehensive loss
Beginning balance	372	6	(220)	1,376	6	1,376
Changes before reclassifications	69		30		212	103
Reclassification of certain income tax effects					258	(1,637)
Amounts reclassified to net income	(8)		0		(8)	(19)
Tax effect	(15)		(7)		(50)	(20)
Other comprehensive income (loss) attributable to La-Z-Boy Incorporated	46		23		412	(1,573)
Ending balance	418	372	(197)	(220)	418	(197)
Unrealized gain (loss) on marketable securities | ASU 2016-01 - Investments
Activity in accumulated other comprehensive loss
Reclassification of certain income tax effects						1,600
Cumulative effect on retained earnings, tax						2,100
Cumulative effect on retained earnings, before tax						500
Net pension amortization and net actuarial loss
Activity in accumulated other comprehensive loss
Beginning balance	(4,272)	(3,605)	(28,601)	(29,117)	(3,605)	(29,117)
Reclassification of certain income tax effects					(708)
Amounts reclassified to net income	54		686		109	1,372
Tax effect	(13)		(169)		(27)	(339)
Other comprehensive income (loss) attributable to La-Z-Boy Incorporated	41		517		(626)	1,033
Ending balance	(4,231)	(4,272)	(28,084)	(28,601)	(4,231)	(28,084)
Accumulated other comprehensive loss
Activity in accumulated other comprehensive loss
Beginning balance	(3,728)	(3,462)	(29,573)	(25,199)	(3,462)	(25,199)
Changes before reclassifications	1,236		719		1,507	(2,678)
Reclassification of certain income tax effects					(547)	(1,637)
Amounts reclassified to net income	55		751		115	1,485
Tax effect	(31)		(226)		(81)	(300)
Other comprehensive income (loss) attributable to La-Z-Boy Incorporated	1,260		1,244		994	(3,130)
Ending balance	$ (2,468)	$ (3,728)	$ (28,329)	(29,573)	$ (2,468)	$ (28,329)
Accumulated other comprehensive loss | ASU 2016-01 - Investments
Activity in accumulated other comprehensive loss
Reclassification of certain income tax effects				$ (1,637)