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Fair Value Of Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2011
Fair Value Of Financial Instruments [Abstract]  
Fair Values Of Financial Assets And Liabilities
(THOUSANDS OF DOLLARS) DECEMBER 31, 2011 JANUARY1, 2011
  LEVEL 1 LEVEL 2 LEVEL 3 TOTAL LEVEL 1 LEVEL 2 LEVEL 3 TOTAL
Assets:                                
Money market funds (A) $ 10,404 $ - $ - $ 10,404 $ 7,003 $ - $ - $ 7,003
Short-term investments (B)   -   -   -   -   2,514   -   -   2,514
Derivatives not designated as
hedging instruments:
                               
Foreign exchange contracts (C)   -   55   -   55   -   -   -   -
  $ 10,404 $ 55 $ - $ 10,459 $ 9,517 $ - $ - $ 9,517
  DECEMBER 31, 2011 JANUARY1, 2011
  LEVEL 1 LEVEL 2 LEVEL 3 TOTAL LEVEL 1 LEVEL 2 LEVEL 3 TOTAL
Liabilities:                                
Derivatives designated as
hedging instruments:
                               
Interest rate swaps (D) $ - $ 169 $ - $ 169 $ - $ 184 $ - $ 184
Derivatives not designated as
hedging instruments:
                               
Foreign exchange contracts (C)   -   31   -   31   -   154   -   154
  $ - $ 200 $ - $ 200 $ - $ 338 $ - $ 338

 

(A) Value is based on quoted market prices of identical instruments, fair value is included in cash and cash equivalents

(B) Value is based on quoted market prices of identical instruments

(C) Value is based on the present value of the forward rates less the contract rate multiplied by the notional amount, fair value is included in other current assets or accounts payable, accrued expenses and other liabilities

(D) Value is derived from a discounted cash flow analysis based on the terms of the contract and the interest rate curve, fair value is included in accounts payable, accrued expenses and other liabilities

Effective Portion Of Pre-Tax Gains (Losses) On Derivative Instruments