Segment Information - Income Statement Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 29, 2016	Oct. 24, 2015	Oct. 29, 2016	Oct. 24, 2015
Segment Information
Sales	$ 376,579	$ 382,891	$ 717,362	$ 724,314
Operating Income (Loss)	33,168	33,394	54,936	53,360
Interest expense	117	133	232	245
Interest income	234	164	438	369
Other income (expense), net	(279)	512	(351)	2,480
Income before income taxes	33,006	33,937	54,791	55,964
Upholstery Segment
Segment Information
Sales	244,898	260,080	468,707	492,564
Casegoods Segment
Segment Information
Sales	23,567	25,787	44,152	46,989
Retail Segment
Segment Information
Sales	107,365	96,480	203,085	183,131
Corporate and Other, non-segment
Segment Information
Sales	749	544	1,418	1,630
Operating Segments | Upholstery Segment
Segment Information
Sales	295,789	305,817	563,205	578,493
Operating Income (Loss)	37,530	37,040	67,339	61,634
Operating Segments | Casegoods Segment
Segment Information
Sales	25,888	28,219	50,926	51,612
Operating Income (Loss)	2,847	2,634	4,994	4,324
Operating Segments | Retail Segment
Segment Information
Operating Income (Loss)	3,007	5,716	5,190	10,445
Corporate and Other
Segment Information
Operating Income (Loss)	(10,216)	(11,996)	(22,587)	(23,043)
Corporate and Other | Corporate and Other, non-segment
Segment Information
Sales	2,312	1,294	4,191	2,896
Eliminations
Segment Information
Sales	(54,775)	(48,919)	(104,045)	(91,818)
Eliminations | Upholstery Segment
Segment Information
Sales	(50,891)	(45,737)	(94,498)	(85,929)
Eliminations | Casegoods Segment
Segment Information
Sales	(2,321)	(2,432)	(6,774)	(4,623)
Eliminations | Corporate and Other, non-segment
Segment Information
Sales	$ (1,563)	$ (750)	$ (2,773)	$ (1,266)