Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended					6 Months Ended
	Oct. 24, 2020	Jul. 25, 2020	Oct. 26, 2019	Jul. 27, 2019		Oct. 24, 2020	Oct. 26, 2019
Activity in accumulated other comprehensive loss
Beginning balance	$ 714,999	$ 716,306	$ 698,138	$ 696,976		$ 716,306	$ 696,976
Changes before reclassifications	1,214		1,236			2,904	1,507
Reclassification of certain income tax effects				0	[1]		(547)
Amounts reclassified to net income	61		55			126	115
Tax effect	0		(31)			(35)	(81)
Other comprehensive income attributable to La-Z-Boy Incorporated	1,275		1,260			2,995	994
Ending balance	754,649	714,999	710,742	698,138		754,649	710,742
Components of non-controlling interest
Beginning balance	714,999	716,306	698,138	696,976		716,306	696,976
Net income	35,304	4,679	22,904	17,988		39,983	40,892
Other comprehensive income	1,354	2,218	1,619	767		3,572	2,386
Ending balance	754,649	714,999	710,742	698,138		754,649	710,742
Translation adjustment
Activity in accumulated other comprehensive loss
Beginning balance	(278)	(1,891)	178	50		(1,891)	50
Changes before reclassifications	1,275		1,167			2,888	1,295
Reclassification of certain income tax effects							0
Amounts reclassified to net income	0		0			0	0
Tax effect	0		0			0	0
Other comprehensive income attributable to La-Z-Boy Incorporated	1,275		1,167			2,888	1,295
Ending balance	997	(278)	1,345	178		997	1,345
Components of non-controlling interest
Beginning balance	(278)	(1,891)	178	50		(1,891)	50
Ending balance	997	(278)	1,345	178		997	1,345
Change in fair value of cash flow hedge
Activity in accumulated other comprehensive loss
Beginning balance	0	0	(6)	87		0	87
Changes before reclassifications	0		0			0	0
Reclassification of certain income tax effects							(97)
Amounts reclassified to net income	0		9			0	14
Tax effect	0		(3)			0	(4)
Other comprehensive income attributable to La-Z-Boy Incorporated	0		6			0	(87)
Ending balance	0	0	0	(6)		0	0
Components of non-controlling interest
Beginning balance	0	0	(6)	87		0	87
Ending balance	0	0	0	(6)		0	0
Unrealized gain (loss) on marketable securities
Activity in accumulated other comprehensive loss
Beginning balance	491	449	372	6		449	6
Changes before reclassifications	(61)		69			16	212
Reclassification of certain income tax effects							258
Amounts reclassified to net income	(25)		(8)			(47)	(8)
Tax effect	21		(15)			8	(50)
Other comprehensive income attributable to La-Z-Boy Incorporated	(65)		46			(23)	412
Ending balance	426	491	418	372		426	418
Components of non-controlling interest
Beginning balance	491	449	372	6		449	6
Ending balance	426	491	418	372		426	418
Net pension amortization and net actuarial loss
Activity in accumulated other comprehensive loss
Beginning balance	(5,445)	(5,510)	(4,272)	(3,605)		(5,510)	(3,605)
Changes before reclassifications	0		0			0	0
Reclassification of certain income tax effects							(708)
Amounts reclassified to net income	86		54			173	109
Tax effect	(21)		(13)			(43)	(27)
Other comprehensive income attributable to La-Z-Boy Incorporated	65		41			130	(626)
Ending balance	(5,380)	(5,445)	(4,231)	(4,272)		(5,380)	(4,231)
Components of non-controlling interest
Beginning balance	(5,445)	(5,510)	(4,272)	(3,605)		(5,510)	(3,605)
Ending balance	(5,380)	(5,445)	(4,231)	(4,272)		(5,380)	(4,231)
Accumulated other comprehensive income (loss)
Activity in accumulated other comprehensive loss
Beginning balance	(5,232)	(6,952)	(3,728)	(3,462)		(6,952)	(3,462)
Ending balance	(3,957)	(5,232)	(2,468)	(3,728)		(3,957)	(2,468)
Components of non-controlling interest
Beginning balance	(5,232)	(6,952)	(3,728)	(3,462)		(6,952)	(3,462)
Ending balance	(3,957)	(5,232)	(2,468)	(3,728)		(3,957)	(2,468)
Non-Controlling Interests
Activity in accumulated other comprehensive loss
Beginning balance	7,425	15,553	14,873	14,468		15,553	14,468
Ending balance	7,873	7,425	15,543	14,873		7,873	15,543
Components of non-controlling interest
Beginning balance	7,425	15,553	14,873	14,468		15,553	14,468
Net income	369	(119)	311	(81)		250	230
Other comprehensive income	79	498	359	486		577	845
Dividends distributed to joint venture minority partners	0		0			(8,507)	0
Ending balance	$ 7,873	$ 7,425	$ 15,543	$ 14,873		$ 7,873	$ 15,543

[1] Income tax effects of the Tax Cuts and Jobs Act are reclassified from Accumulated Other Comprehensive Income ("AOCI") to retained earnings due to the adoption of ASU 2018-02.