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STOCK OWNERSHIP PLANS - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 29, 2024	Sep. 24, 2023	Sep. 25, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Non-cash stock compensation expense	$ 1.8	$ 1.8	$ 1.3
Common stock reserved for future issuances (in shares)	69,107
Number of shares available for grant (in shares)	69,107
Unrecognized compensation expense for unvested restricted common stock	$ 1.3
Cost not yet recognized, period for recognition (years)	1 year 4 months 24 days
Fair value of shares vested in period	$ 0.4	$ 1.1	$ 1.4
Employee Stock Purchase Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Employee stock ownership plan, shares available for issuance (in shares)	27,000
Supplemental Employee Stock Purchase Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Employee stock ownership plan, shares available for issuance (in shares)	870
Options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting or restriction period (in years)	10 years

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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