EMPLOYEE BENEFIT PLANS (Net Periodic (Benefit) Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost on accumulated benefit obligation	$ 2,446	$ 2,515	$ 2,493
Expected return on assets	(2,601)	(2,701)	(3,138)
Amortization of net actuarial gain (loss)	681	578	643
Total net periodic (benefit) cost	526	392	(2)
Total net periodic cost (benefit) and changes recognized in OCI	1,096	1,458	(1,275)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	1,251	1,644	(630)
Amortization of actuarial gain/loss	(681)	(578)	(643)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	570	1,066	(1,273)
Postretirement Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost - benefits attributed to service during the period	30	123	130
Interest cost on accumulated benefit obligation	137	177	178
Amortization of net actuarial gain (loss)	(306)	(198)	(192)
Total net periodic (benefit) cost	(139)	102	116
Total net periodic cost (benefit) and changes recognized in OCI	193	(429)	30
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	26	(740)	(278)
Amortization of actuarial gain/loss	(306)	(198)	(192)
Net prior service cost	0	11	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	332	(531)	$ (86)
Net prior service cost	0	$ 11
Reclassification out of Accumulated Other Comprehensive Income | Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amortization of net actuarial gain (loss)	700
Reclassification out of Accumulated Other Comprehensive Income | Postretirement Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amortization of net actuarial gain (loss)	$ 300