Long-Term Debt and Interest Rate Agreement (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 03, 2011	Nov. 27, 2010
Debt Instrument [Line Items]
Current portion of long-term debt	$ 1,289	$ 146
Long-term debt, less current portion	15,981	17,331
Maturities of Long-term Debt [Abstract]
2012	1,289
2013	42
2014	11
2015	8
2016	8,413
Thereafter	7,507
Multicurrency Revolving Credit Agreement [Member]
Debt Instrument [Line Items]
Long-term debt	0	0
Industrial Revenue Bonds [Member]
Debt Instrument [Line Items]
Long-term debt	15,820	15,820
Debt, Weighted Average Interest Rate	0.35%	0.50%
Note payable [Member]
Debt Instrument [Line Items]
Long-term debt	1,196	1,109
Debt Instrument, Maturity Date	Mar. 05, 2012	Mar. 05, 2012
Debt Instrument, Interest Rate, Stated Percentage	6.00%	6.00%
Other long-term debt [Member]
Debt Instrument [Line Items]
Long-term debt	254	548
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Debt Instrument [Line Items]
Long-term debt	17,270	17,477
Campbellsville-Taylor County Industrial Development Authority (Kentucky) [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	May 01, 2031
Campbellsville-Taylor County Industrial Development Authority (Kentucky) [Member] \| Industrial Revenue Bonds [Member]
Debt Instrument [Line Items]
Long-term debt	7,410	7,410
South Dakota Economic Development Finance Authority [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Feb. 01, 2016
South Dakota Economic Development Finance Authority [Member] \| Industrial Revenue Bonds [Member]
Debt Instrument [Line Items]
Long-term debt	$ 8,410	$ 8,410

Interest rate stated in the contractual debt agreement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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Date when the debt instrument is scheduled to be fully repaid, which may be presented in a variety of ways (year, month and year, day, month and year, quarter, etc.).

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-Publisher FASB

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No definition available.

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Total of the portions of the carrying amounts as of the balance sheet date of long-term debt, which may include notes payable, bonds payable, debentures, mortgage loans, and commercial paper, which are scheduled to be repaid within one year or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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Amount of long-term debt maturities after year five following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 47

-Paragraph 10

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-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

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Amount of long-term debt maturing within the next twelve months following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates.

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Amount of long-term debt maturing in year five following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates.

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Amount of long-term debt maturing in year four following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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