FAIR VALUE ACCOUNTING (Details) (USD $) In Thousands, unless otherwise specified	Apr. 01, 2012	Dec. 31, 2011
Fair value [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Cash flow hedging derivatives - Assets	$ 2,758	$ 7,883
Cash flow hedging derivatives - Liabilities	6,919	7,412
Quoted Prices in Active Markets of Identical Assets (Level 1)
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Cash flow hedging derivatives - Assets	330	3,929
Cash flow hedging derivatives - Liabilities	3,755	2,103
Significant Other Observable Inputs (Level 2)
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Cash flow hedging derivatives - Assets	2,428	3,954
Cash flow hedging derivatives - Liabilities	3,164	5,309
Significant Unobservable Inputs (Level 3)
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Cash flow hedging derivatives - Assets	0	0
Cash flow hedging derivatives - Liabilities	$ 0	$ 0