PENSION PLANS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 27, 2020	Mar. 29, 2019	Mar. 27, 2020	Mar. 29, 2019
Retirement Benefits [Abstract]
Pension plan contributions	$ 44	$ 45	$ 88	$ 90
Components of net periodic benefit cost:
Service cost	0	0	0	0
Interest on projected benefit obligation	276	264	551	529
Less estimated return on plan assets	214	191	427	382
Amortization of unrecognized losses	82	139	164	277
Net periodic benefit cost	$ 144	$ 212	$ 288	$ 424