LEASES (Narrative) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 27, 2020 USD ($)	Mar. 29, 2019 USD ($)	Mar. 27, 2020 USD ($) contract	Mar. 29, 2019 USD ($)	Sep. 28, 2018 USD ($)
Lessee, Lease, Description [Line Items]
Total net lease liability	$ 39,429		$ 39,429
Right of use assets	38,735		$ 38,735
Number of contracts | contract			200
Rent expense		$ 2,404		$ 4,678
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term			1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term			15 years
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
Total net lease liability					$ 41,000
Right of use assets					$ 41,000
Affiliated Entity
Lessee, Lease, Description [Line Items]
Total net lease liability	1,737		$ 1,737
Operating lease, cost	$ 247		$ 493
Rent expense		$ 250		$ 499