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Business Combination - Mattress Fabric Segment - Unaudited Pro Forma Consolidated Results of Operations (Detail) (Bodet And Horst [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jan. 26, 2014	Jan. 27, 2013	Jan. 26, 2014	Jan. 27, 2013
Bodet And Horst [Member]
Business Acquisition [Line Items]
Net Sales	$ 72,389	$ 66,162	$ 213,119	$ 205,839
Income from operations	4,796	4,854	15,805	14,982
Net income	$ 8,381	$ 2,858	$ 14,707	$ 14,532
Net income per share, basic	$ 0.69	$ 0.24	$ 1.21	$ 1.18
Net income per share, diluted	$ 0.68	$ 0.23	$ 1.19	$ 1.17

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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