PENSION PLANS (Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2021	Dec. 27, 2019
Components of net periodic benefit cost:
Service cost	$ 0	$ 0
Interest on projected benefit obligation	233	276
Less estimated return on plan assets	160	214
Amortization of unrecognized losses (gains)	134	82
Net periodic benefit cost	$ 207	$ 144