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Long-Term Debt and Commitments (Details)
9 Months Ended9 Months Ended9 Months Ended9 Months Ended
Oct. 02, 2011
USD ($)
Dec. 31, 2010
USD ($)
Oct. 02, 2011
Series 2006 Senior Notes Due 2013 [Member]
USD ($)
Dec. 31, 2010
Series 2006 Senior Notes Due 2013 [Member]
USD ($)
Oct. 02, 2011
Floating Rate Series 2006A Senior Notes Due 2013 [Member]
USD ($)
Dec. 31, 2010
Floating Rate Series 2006A Senior Notes Due 2013 [Member]
USD ($)
Oct. 02, 2011
Variable/Fixed Rate Industrial Development Revenue Bonds Due 2012 [Member]
USD ($)
Dec. 31, 2010
Variable/Fixed Rate Industrial Development Revenue Bonds Due 2012 [Member]
USD ($)
Oct. 02, 2011
Variable/Fixed Rate Industrial Development Revenue Bonds Series 1999 Due 2014 [Member]
USD ($)
Dec. 31, 2010
Variable/Fixed Rate Industrial Development Revenue Bonds Series 1999 Due 2014 [Member]
USD ($)
Oct. 02, 2011
Installment Obligations [Member]
USD ($)
Dec. 31, 2010
Installment Obligations [Member]
USD ($)
Oct. 02, 2011
Other Borrowings [Member]
USD ($)
Apr. 03, 2011
Other Borrowings [Member]
USD ($)
Apr. 03, 2011
Other Borrowings [Member]
CNY
Dec. 31, 2010
Other Borrowings [Member]
USD ($)
Debt Instrument [Line Items]                
Long-term debt, gross  $ 50,000,000$ 50,000,000$ 25,000,000$ 25,000,000$ 8,000,000$ 8,000,000$ 8,200,000$ 8,200,000$ 1,400,000$ 1,400,000$ 1,700,000$ 1,600,000 10,600,000$ 0
Less: Current maturities8,549,0000              
Long-term debt85,721,00092,621,000              
Interest rate on debt instrument (in hundredths)   5.53%        6.20%   
Maturity dateOct. 05, 2013Oct. 05, 2013Aug. 01, 2012Nov. 01, 2014
Term of debt instrument (in years)            3Y   
Short-term Borrowings [Abstract]                
Uncommitted short-term bank credit lines, maximum borrowing capacity186,000,000               
Uncommitted short-term bank credit lines, amount outstanding$ 5,370,000$ 4,611,000