LEASES AND OTHER COMMITMENTS (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 28, 2018	Sep. 29, 2017	Sep. 30, 2016
Operating Leased Assets [Line Items]
Rental expense	$ 8,316	$ 7,969	$ 7,011
Related Parties
Operating Leased Assets [Line Items]
Rental expense	$ 992	$ 949	$ 907

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

No definition available.

Name:	us-gaap_LeaseAndRentalExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration