DERIVATIVE INSTRUMENTS - Notional amount and FV (Details) - Foreign Currency Contract - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016	Apr. 02, 2016
Designated as Hedging Instrument | Other current assets
Asset Derivatives
Asset Derivatives, Notional amount	$ 23,300	$ 40,300	$ 17,432
Asset Derivatives, Fair value	1,176	2,388	137
Designated as Hedging Instrument | Accrued expenses
Liability Derivatives
Liability Derivatives, Notional Amount	15,900	1,600	16,918
Liability Derivatives, Fair Value	187	5	680
Not Designated as Hedging Instrument | Other current assets
Asset Derivatives
Asset Derivatives, Notional amount	15,145	11,500
Asset Derivatives, Fair value	132	11
Not Designated as Hedging Instrument | Accrued expenses
Liability Derivatives
Liability Derivatives, Notional Amount	65,938	43,439	45,459
Liability Derivatives, Fair Value	$ 336	$ 408	$ 287