PENSION PLANS (Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 02, 2021	Mar. 27, 2020	Apr. 02, 2021	Mar. 27, 2020
Components of net periodic benefit cost:
Service cost	$ 0	$ 0	$ 0	$ 0
Interest on projected benefit obligation	233	276	466	551
Less estimated return on plan assets	160	214	321	427
Amortization of unrecognized losses (gains)	134	82	269	164
Net periodic benefit cost	$ 207	$ 144	$ 414	$ 288