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Long-Term Debt and Lines of Credit - Long-Term Debt - Narrative (Detail) $ in Thousands |  | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Aug. 11, 2015 USD ($) Payment | Aug. 02, 2015 USD ($) | May. 03, 2015 USD ($) | Aug. 03, 2014 USD ($) | Aug. 11, 2008 USD ($)
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt |  | $ 2,200 | $ 2,200 | $ 4,400 |
Unsecured senior term notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Issuance of unsecured senior term notes |  |  |  |  | $ 11,000
Fixed interest rate |  |  |  |  | 8.01%
Term of the note agreement |  | 7 years |  |  |
Required amount of principal payment installments |  | $ 2,200 |  |  |
Required debt payment frequency |  | Annual |  |  |
Date of first required principal payment |  | Aug. 11, 2011 |  |  |
Long-term debt, fair value |  | $ 2,300 | $ 2,300 | $ 4,600 |
Unsecured senior term notes [Member] | Subsequent Event [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Remaining annual payment paid | $ 2,200 |  |  |  |
Number of remaining annual payment paid | Payment | 1 |  |  |  |

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- Definition Date the debt agreement requires the first payment to be made, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Description of the frequency of periodic payments (monthly, quarterly, annual). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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