Schedule of Fair Value of Derivative Instruments by Balance Sheet Location (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 29, 2012	Dec. 31, 2011	Sep. 24, 2011
Other current assets
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, Total derivative assets	$ 146	$ 341	$ 1,677
Other current liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, Total derivative liabilities	430	343	38
Designated cash flow hedges | Foreign Exchange Contracts | Other current assets
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, Total derivative assets		284	559
Designated cash flow hedges | Foreign Exchange Contracts | Other current liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, Total derivative liabilities	376
Non-designated hedging instruments | Foreign Exchange Contracts | Other current assets
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, Total derivative assets	67	57	393
Non-designated hedging instruments | Foreign Exchange Contracts | Other current liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, Total derivative liabilities	54	92	38
Non-designated hedging instruments | Commodity Contracts - Fuel | Other current assets
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, Total derivative assets	79		725
Non-designated hedging instruments | Commodity Contracts - Fuel | Other current liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, Total derivative liabilities		$ 251