DEFINED BENEFIT PENSION PLANS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014
Net periodic benefit costs
Service cost	$ 547	$ 482	$ 1,849	$ 1,740
Interest cost on benefit obligations	120	198	362	514
Expected return on plan assets	(44)	(70)	(131)	(211)
Amortization of net loss	91	44	273	134
Total	$ 714	$ 654	$ 2,353	$ 2,177