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PENSION PLANS (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 29, 2019
Mar. 30, 2018
Mar. 29, 2019
Mar. 30, 2018
Retirement Benefits [Abstract]        
Pension plan contributions $ 45 $ 5,047 $ 90 $ 5,093
Components of net periodic benefit cost:        
Service cost 0 0 0 0
Interest on projected benefit obligation 264 261 529 522
Less estimated return on plan assets 191 298 382 597
Amortization of unrecognized losses 139 182 277 365
Net periodic benefit cost $ 212 $ 145 $ 424 $ 290