OTHER FINANCIAL DATA Other Financial Data (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 28, 2019	Sep. 29, 2018	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Incentive Compensation Expense	$ 423	$ 25,607	$ 29,612
Rent Expense	4,889	4,914	5,071
Warranty and Retrofit Expense	$ 13,030	$ 13,110	$ 13,740

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