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Other Assets - Narrative (Detail) (USD $) | 12 Months Ended |  | 12 Months Ended |  |  |  | 12 Months Ended
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Apr. 28, 2013 | Apr. 28, 2013 Compensation Agreement One [Member] Chairman of the Board [Member] | Dec. 11, 2012 Compensation Agreement One [Member] Chairman of the Board [Member] | Apr. 28, 2013 Compensation Agreement One [Member] Chairman of the Board [Member] Maximum [Member] | Apr. 28, 2013 Compensation Agreement Two [Member] Chairman of the Board [Member] | Mar. 18, 2013 Compensation Agreement Two [Member] Chairman of the Board [Member] | Apr. 28, 2013 Other assets [Member] Contract | Apr. 29, 2012 Other assets [Member] Contract | May 01, 2011 Other assets [Member] Non-compete agreement with International Textile Group, Inc. [Member] | Apr. 28, 2013 Other assets [Member] Non-compete Agreements [Member] | Apr. 29, 2012 Other assets [Member] Non-compete Agreements [Member] | May 01, 2011 Other assets [Member] Non-compete Agreements [Member] | Apr. 28, 2013 Other assets [Member] Non-compete agreement with Bodet and Horst [Member] | Apr. 29, 2012 Other assets [Member] Non-compete agreement with Bodet and Horst [Member] | May 01, 2011 Other assets [Member] Non-compete agreement with Bodet and Horst [Member]
Other Assets Noncurrent [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life |  |  |  |  |  |  |  |  | 4 years |  |  |  | 6 years | 6 years | 6 years
Gross carrying amount |  |  |  |  |  |  |  |  |  | $ 1,100,000 | $ 1,100,000 |  |  |  |
Accumulated amortization |  |  |  |  |  |  |  |  |  | 940,000 | 741,000 |  |  |  |
Amortization expense |  |  |  |  |  |  |  |  |  | 198,000 | 197,000 | 413,000 |  |  |
Death benefits to beneficiary of insured on terminated life insurance agreement |  |  | 8,000,000 |  |  | 500,000 |  |  |  |  |  |  |  |  |
Collection of cash surrender value from termination of split dollar life insurance agreement | 716,000 | 626,000 |  |  | 90,000 |  |  |  |  |  |  |  |  |  |
Additional annual compensation commitment |  | 60,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated term of the agreement |  |  |  | 12 years |  |  |  |  |  |  |  |  |  |  |
Number of life insurance contracts owned |  |  |  |  |  |  | 2 | 4 |  |  |  |  |  |  |
Life insurance contracts, death benefits to insured |  |  |  |  |  |  | $ 4,400,000 | $ 12,900,000 |  |  |  |  |  |  |

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