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Income Taxes - Narrative (Detail) (USD $) | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |  |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended | 24 Months Ended | 30 Months Ended | 36 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |  | 12 Months Ended | 36 Months Ended |  |  | 12 Months Ended | 24 Months Ended |  |  | 12 Months Ended |  | 3 Months Ended |
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Apr. 28, 2013 | Jan. 27, 2013 | Oct. 28, 2012 | Jul. 29, 2012 | Apr. 29, 2012 | Jan. 29, 2012 | Oct. 30, 2011 | Jul. 31, 2011 | Apr. 28, 2013 | Apr. 28, 2013 | Apr. 29, 2012 | May 01, 2011 | May 02, 2010 | Apr. 28, 2013 Deferred Income Taxes Net Noncurrent [Member] | Apr. 29, 2012 Deferred Income Taxes Net Noncurrent [Member] | Apr. 28, 2013 Income Taxes Payable - Long-Term [Member] | Apr. 29, 2012 Income Taxes Payable - Long-Term [Member] | Oct. 28, 2012 U.S. Tax Authorities [Member] | Apr. 29, 2012 U.S. Tax Authorities [Member] | Oct. 30, 2011 U.S. Tax Authorities [Member] | May 01, 2011 U.S. Tax Authorities [Member] | Oct. 28, 2012 U.S. Tax Authorities [Member] | Apr. 28, 2013 U.S. Tax Authorities [Member] | Apr. 29, 2012 U.S. Tax Authorities [Member] | May 01, 2011 U.S. Tax Authorities [Member] | Oct. 30, 2011 U.S. Tax Authorities [Member] | Apr. 29, 2012 U.S. Tax Authorities [Member] | May 01, 2011 U.S. Tax Authorities [Member] | Oct. 30, 2011 U.S. Tax Authorities [Member] Mattress Fabrics [Member] | Oct. 31, 2010 U.S. Tax Authorities [Member] Mattress Fabrics [Member] | Oct. 28, 2012 U.S. Tax Authorities [Member] Mattress Fabrics [Member] | Oct. 30, 2011 U.S. Tax Authorities [Member] Mattress Fabrics [Member] | Apr. 29, 2012 U.S. Tax Authorities [Member] Mattress Fabrics [Member] | May 01, 2011 U.S. Tax Authorities [Member] Mattress Fabrics [Member] | Apr. 29, 2012 U.S. Tax Authorities [Member] Deferred Tax Asset Loss Carryforwards [Member] | May 01, 2011 U.S. Tax Authorities [Member] Deferred Tax Asset Loss Carryforwards [Member] | Apr. 28, 2013 U.S. Tax Authorities [Member] Minimum [Member] | Apr. 28, 2013 U.S. Tax Authorities [Member] Maximum [Member] | May 01, 2011 China [Member] | May 02, 2010 China [Member] | May 01, 2011 China [Member] | Apr. 28, 2013 China [Member] | Apr. 29, 2012 China [Member] | Apr. 29, 2012 Poland [Member] | Apr. 28, 2013 Poland [Member] Culp Europe [Member] | Oct. 28, 2012 Poland [Member] Culp Europe [Member] | Apr. 28, 2013 Poland [Member] Culp Europe [Member] Deferred Tax Asset Loss Carryforwards [Member] | Apr. 28, 2013 Canada [Member] | Apr. 29, 2012 Canada [Member] | Apr. 28, 2013 Foreign operations [Member] | Apr. 29, 2012 Foreign operations [Member] | May 01, 2011 Foreign operations [Member] | Apr. 28, 2013 Domestic operations [Member] | Apr. 29, 2012 Domestic operations [Member] | May 01, 2011 Domestic operations [Member] | Apr. 28, 2013 U.S. Tax Authorities and Poland Tax Authorities [Member] Deferred Tax Asset Loss Carryforwards [Member] | Jan. 27, 2013 U.S. State Tax [Member] | Apr. 28, 2013 U.S. State Tax [Member] Deferred Tax Asset Loss Carryforwards [Member]
Income Taxes [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
income before income taxes | $ 5,863,000 | $ 4,523,000 | $ 4,532,000 | $ 5,372,000 | $ 5,494,000 | $ 2,877,000 | $ 2,863,000 | $ 2,965,000 |  | $ 20,289,000 | $ 14,198,000 | $ 15,062,000 |  |  |  |  |  |  |  |  |  | $ 3,400,000 |  |  | $ 8,200,000 | $ 10,000,000 | $ 11,900,000 | $ 4,200,000 |  |  |  |  |  |  |  |  |  |  | $ 7,900,000 | $ 7,900,000 | $ 10,200,000 |  |  |  |  | $ (1,100,000) |  |  |  | $ 12,000,000 | $ 10,500,000 | $ 9,900,000 | $ 8,200,000 | $ 3,700,000 | $ 5,200,000 |  |  |
Operating loss carryforwards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 59,900,000 |  | 60,000,000 |  | 50,700,000 | 59,900,000 | 60,000,000 |  | 59,900,000 | 60,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating loss carryforwards, expiration period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13 years | 16 years |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |
Current deferred tax asset |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,100,000 |  |  |  | 7,400,000 | 2,100,000 |  |  | 2,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 325,000 | 405,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-current deferred tax asset |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,100,000 |  |  |  |  | 2,100,000 |  |  | 2,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 753,000 | 1,000,000 | 115,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-current deferred tax liability | 3,075,000 |  |  |  | 705,000 |  |  |  | 3,075,000 | 3,075,000 | 705,000 |  |  |  |  |  |  |  |  |  |  |  | 2,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,100,000 | 705,000 |  |  |  |  |  |  |  |  |
Valuation allowance | 963,000 |  |  |  | 12,797,000 |  |  |  | 963,000 | 963,000 | 12,797,000 |  |  |  |  |  |  |  | 12,797,000 |  | 16,400,000 |  | 722,000 | 12,797,000 | 16,400,000 |  | 12,797,000 | 16,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 241,000 |  |  |  |  |  |  |  |  | 963,000 |  | 722,000
Income tax expense (benefit) related to changes in the valuation allowance for deferred tax assets |  |  |  |  |  |  |  |  |  | (11,800,000) | (3,700,000) | (6,400,000) |  |  |  |  |  | (12,200,000) | 211,000 | (4,400,000) | (2,300,000) |  | (12,100,000) | (4,200,000) |  |  |  |  |  |  |  |  |  |  | 447,000 | (2,800,000) |  |  | (1,300,000) |  |  |  |  |  | 241,000 |  |  |  |  |  |  |  |  |  |  |  | 103,000 |
net sales | 70,375,000 | 63,695,000 | 65,560,000 | 69,184,000 | 75,711,000 | 60,450,000 | 58,013,000 | 60,270,000 |  | 268,814,000 | 254,443,000 | 216,806,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 35,200,000 | 28,300,000 | 77,700,000 | 67,400,000 | 145,500,000 | 122,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating income | 6,076,000 | 4,863,000 | 4,668,000 | 5,479,000 | 5,667,000 | 2,993,000 | 2,926,000 | 3,121,000 |  | 21,085,000 | 14,706,000 | 15,743,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,800,000 | 3,300,000 | 10,300,000 | 7,000,000 | 15,800,000 | 15,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage increase in net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage increase in operating income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 49.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Undistributed earnings from our foreign subsidiaries that will not be reinvested indefinitely | 56,700,000 |  | 55,600,000 |  |  |  |  |  | 56,700,000 | 56,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income tax expense (benefit) from change in treatment of undistributed earnings |  |  | 6,600,000 |  |  |  |  |  | 400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. income and foreign withholding taxes |  |  |  |  |  |  |  |  |  | 22,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. foreign income tax credits |  |  |  |  |  |  |  |  |  | 15,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized tax benefits that would favorably impact effective income tax rate if recognized | 4,200,000 |  |  |  | 4,200,000 |  |  |  | 4,200,000 | 4,200,000 | 4,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized tax benefits | 13,166,000 |  |  |  | 12,462,000 |  |  |  | 13,166,000 | 13,166,000 | 12,462,000 | 11,739,000 | 10,135,000 | 8,900,000 | 8,300,000 | 4,200,000 | 4,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross amount of interest and penalties due to unrecognized tax benefits | 640,000 |  |  |  | 485,000 |  |  |  | 640,000 | 640,000 | 485,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized tax benefits for which significant change is reasonably possible | (13,100,000) |  |  |  |  |  |  |  | (13,100,000) | (13,100,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income tax payments, net of income tax refunds |  |  |  |  |  |  |  |  |  | $ 2,800,000 | $ 2,400,000 | $ 1,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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