Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands		3 Months Ended
	Apr. 29, 2018	Jul. 28, 2018	Jul. 29, 2017
Activity in accumulated other comprehensive loss
Balance	$ 612,181	$ 612,181
Balance		614,209
Components of non-controlling interest
Balance as of the beginning of the period	13,035	13,035	$ 11,186
Net income		648	93
Other comprehensive income (loss)		(1,228)	405
Balance as of the end of the period		12,455	11,684
Accumulated Other Comprehensive Income (Loss)
Activity in accumulated other comprehensive loss
Balance	(25,199)	(25,199)	(32,883)
Changes before reclassifications		(3,397)	3,160
Amounts reclassified to net income		734	(80)
Tax effect		(74)	(445)
Other comprehensive income (loss) attributable to La-Z-Boy Incorporated		(4,374)	2,635
Balance		(29,573)	(30,248)
Accumulated Other Comprehensive Income (Loss) | ASU 2016-01 - Investments
Activity in accumulated other comprehensive loss
Cumulative effect adjustment		(1,637)
Cumulative effect adjustment - unrealized gains on equity investments	(2,100)
Cumulative effect adjustment - tax expense	(500)
Translation Adjustment
Activity in accumulated other comprehensive loss
Balance	2,388	2,388	(927)
Changes before reclassifications		(2,961)	1,911
Other comprehensive income (loss) attributable to La-Z-Boy Incorporated		(2,961)	1,911
Balance		(573)	984
Change in Fair Value of Cash Flow Hedge
Activity in accumulated other comprehensive loss
Balance	154	154	74
Changes before reclassifications		(509)	855
Amounts reclassified to net income		67	(83)
Tax effect		109	(294)
Other comprehensive income (loss) attributable to La-Z-Boy Incorporated		(333)	478
Balance		(179)	552
Unrealized Gain (Loss) on Marketable Securities
Activity in accumulated other comprehensive loss
Balance	1,376	1,376	1,752
Changes before reclassifications		73	394
Amounts reclassified to net income		(19)	(832)
Tax effect		(13)	167
Other comprehensive income (loss) attributable to La-Z-Boy Incorporated		(1,596)	(271)
Balance		(220)	1,481
Unrealized Gain (Loss) on Marketable Securities | ASU 2016-01 - Investments
Activity in accumulated other comprehensive loss
Cumulative effect adjustment		(1,637)
Cumulative effect adjustment - unrealized gains on equity investments		(2,100)
Cumulative effect adjustment - tax expense		(500)
Net Pension Amortization and Net Actuarial Loss
Activity in accumulated other comprehensive loss
Balance	$ (29,117)	(29,117)	(33,782)
Amounts reclassified to net income		686	835
Tax effect		(170)	(318)
Other comprehensive income (loss) attributable to La-Z-Boy Incorporated		516	517
Balance		$ (28,601)	$ (33,265)