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Long-Term Debt and Lines of Credit - Lines of Credit Narrative (Detail) | 6 Months Ended |  | 6 Months Ended |  |  | 6 Months Ended |
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Oct. 28, 2012 United States [Member] Amended and Restated Credit Agreement [Member] Revolving Credit Facility [Member] USD ($) | Apr. 29, 2012 United States [Member] Amended and Restated Credit Agreement [Member] Revolving Credit Facility [Member] USD ($) | Oct. 28, 2012 Poland [Member] Revolving credit agreement [Member] USD ($) | Oct. 28, 2012 Poland [Member] Revolving credit agreement [Member] PLN | Apr. 29, 2012 Poland [Member] Revolving credit agreement [Member] USD ($) | Apr. 29, 2012 Poland [Member] Revolving credit agreement [Member] PLN | Jan. 17, 2012 Poland [Member] Revolving credit agreement [Member] PLN | Oct. 28, 2012 China [Member] Revolving credit agreement [Member] USD ($) | Oct. 28, 2012 China [Member] Revolving credit agreement [Member] CNY | Apr. 29, 2012 China [Member] Revolving credit agreement [Member] USD ($)
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | $ 7,600,000 |  | $ 2,100,000 |  |  |  | 6,800,000 | $ 6,400,000 | 40,000,000 |
Expiration date | Aug. 25, 2013 |  | Jan. 15, 2013 | Jan. 15, 2013 |  |  |  | Sep. 02, 2013 | Sep. 02, 2013 |
Applicable interest rate at end of period | 1.81% |  | 6.73% | 6.73% |  |  |  |  |  |
Interest rate description | This agreement provides for a pricing matrix to determine the interest rate payable on loans made under the agreement |  | Bears interest at WIBOR (Warsaw Interbank Offered Rate) plus 2% | Bears interest at WIBOR (Warsaw Interbank Offered Rate) plus 2% |  |  |  | Interest rate determined by the Chinese government | Interest rate determined by the Chinese government |
Outstanding amount | $ 0 | $ 0 | $ 875,000 | 2,800,000 | $ 889,000 | 2,800,000 |  | $ 0 |  | $ 0
Percent added to reference rate in effect from time to time to set the interest rate |  |  | 2.00% | 2.00% |  |  |  |  |  |
Reference rate on which the interest rate is based |  |  | Warsaw Interbank Offered Rate | Warsaw Interbank Offered Rate |  |  |  |  |  |

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- Definition The percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Date the credit facility terminates, in CCYY-MM-DD format. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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