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PENSION PLANS (Narrative) (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Jul. 02, 2021
USD ($)
plan
Jan. 01, 2021
USD ($)
Jun. 26, 2020
USD ($)
Jul. 02, 2021
USD ($)
plan
Jun. 26, 2020
USD ($)
Defined Benefit Plan Disclosure [Line Items]          
Non-contributory defined benefit pension plans | plan 2     2  
Pension plan contributions $ 42   $ 44 $ 130 $ 132
Defined benefit plan, type       us-gaap:PensionPlansDefinedBenefitMember  
Minimum          
Defined Benefit Plan Disclosure [Line Items]          
Plan termination expense   $ 4,000      
Maximum          
Defined Benefit Plan Disclosure [Line Items]          
Plan termination expense   $ 5,000