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Long-Term Debt and Lines of Credit - Lines of Credit Narrative (Detail) |  |  | 9 Months Ended |  | 9 Months Ended |  | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 27, 2013 United States [Member] Amended and Restated Credit Agreement [Member] USD ($) | Apr. 29, 2012 United States [Member] Amended and Restated Credit Agreement [Member] USD ($) | Jan. 27, 2013 United States [Member] Amended and Restated Credit Agreement [Member] Revolving Credit Facility [Member] USD ($) | Apr. 29, 2012 United States [Member] Amended and Restated Credit Agreement [Member] Revolving Credit Facility [Member] USD ($) | Jan. 27, 2013 China [Member] Revolving credit agreement [Member] USD ($) | Jan. 27, 2013 China [Member] Revolving credit agreement [Member] CNY | Apr. 29, 2012 China [Member] Revolving credit agreement [Member] USD ($) | Jan. 27, 2013 Poland [Member] Revolving credit agreement [Member] USD ($) | Jan. 27, 2013 Poland [Member] Revolving credit agreement [Member] PLN | Apr. 29, 2012 Poland [Member] Revolving credit agreement [Member] USD ($) | Apr. 29, 2012 Poland [Member] Revolving credit agreement [Member] PLN | Jan. 17, 2012 Poland [Member] Revolving credit agreement [Member] PLN
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 7,600,000 |  | $ 6,400,000 | 40,000,000 |  | $ 2,200,000 | 6,800,000 |  |  | 6,800,000
Expiration date |  |  | Aug. 25, 2013 |  | Sep. 02, 2013 | Sep. 02, 2013 |  | Aug. 25, 2013 | Aug. 25, 2013 |  |  |
Applicable interest rate at end of period |  |  | 1.80% |  |  |  |  | 6.00% | 6.00% |  |  |
Interest rate description |  |  | This agreement provides for a pricing matrix to determine the interest rate payable on loans made under the agreement |  | This agreement has an interest rate determined by the Chinese government | This agreement has an interest rate determined by the Chinese government |  | This agreement bears interest at WIBOR (Warsaw Interbank Offered Rate) plus 2% | This agreement bears interest at WIBOR (Warsaw Interbank Offered Rate) plus 2% |  |  |
Letter of credit, outstanding amount | 195,000 | 0 |  |  |  |  |  |  |  |  |  |
Outstanding amount |  |  | $ 0 | $ 0 | $ 0 |  | $ 0 | $ 576,000 | 1,800,000 | $ 889,000 | 2,800,000 |
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 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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