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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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The net result for the period of deducting operating expenses from operating revenues.

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The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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Segment Information - Statement of Operations for Operating Segments (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	May. 03, 2015	Feb. 01, 2015	Nov. 02, 2014	Aug. 03, 2014	Apr. 27, 2014	Jan. 26, 2014	Oct. 27, 2013	Jul. 28, 2013	May. 03, 2015	Apr. 27, 2014	Apr. 28, 2013
Segment Reporting Information [Line Items]
net sales	$ 78,846	$ 81,269	$ 73,991	$ 76,060	$ 74,043	$ 72,389	$ 70,589	$ 70,141	$ 310,166	$ 287,162	$ 268,814
gross profit	16,172	14,402	12,278	12,715	11,761	11,837	12,235	13,074	55,567	48,906	49,530
selling, general, and administrative expenses	9,605	8,375	7,379	7,419	7,317	7,041	7,200	7,100	32,778	28,657	28,445
income from operations	6,567	6,027	4,899	5,296	4,444	4,796	5,035	5,974	22,789	20,249	21,085
interest expense	(15)			(68)	(97)	(91)	(99)	(140)	(64)	(427)	(632)
interest income	143	202	153	142	139	148	102	92	622	482	419
other expense	(10)	(307)	(162)	89	(366)	(279)	(224)	(391)	(391)	(1,261)	(583)
income before income taxes	$ 6,685	$ 5,922	$ 4,890	$ 5,459	$ 4,120	$ 4,574	$ 4,814	$ 5,535	22,956	19,043	20,289
Operating Segments [Member]
Segment Reporting Information [Line Items]
income from operations									29,799	25,551	26,853
Operating Segments [Member] \| Upholstery Fabrics [Member]
Segment Reporting Information [Line Items]
net sales									130,427	126,457	114,800
gross profit									22,690	21,429	19,984
selling, general, and administrative expenses									14,562	13,393	13,031
income from operations									8,128	8,036	6,953
Operating Segments [Member] \| Mattress Fabrics [Member]
Segment Reporting Information [Line Items]
net sales									179,739	160,705	154,014
gross profit									32,877	27,477	29,546
selling, general, and administrative expenses									11,206	9,962	9,646
income from operations									21,671	17,515	19,900
Unallocated corporate [Member]
Segment Reporting Information [Line Items]
selling, general, and administrative expenses									7,010	5,302	5,768
income from operations									$ (7,010)	$ (5,302)	$ (5,768)