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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Discount rate from fair value on purchase date that participants pay for shares.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

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Number of shares of capital stock issued (purchased by employees) in connection with an employee stock ownership plan.

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STOCK-BASED COMPENSATION AND STOCK OWNERSHIP PLANS - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Mar. 02, 2017	Mar. 28, 2025	Mar. 29, 2024	Mar. 28, 2025	Mar. 29, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (in shares)		284,109		284,109
Employee stock purchase plan, purchase price (in percent)	85.00%
Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock purchase plan shares issued (in shares)		0	0	0	0
Non-Vested Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares tendered for tax withholding (in shares)				1,609	2,330
Stock-based compensation expense (income), net of forfeitures		$ 462	$ 322	$ 816	$ 750
Unrecognized stock-based compensation expense		2,369		2,369
Fair value of vested restricted stock				$ 690	919
Non-Vested Stock \| Director \| Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)				1 year
Non-Vested Stock \| Officers and Employees \| Class A \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)				1 year
Non-Vested Stock \| Officers and Employees \| Class A \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)				4 years
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (income), net of forfeitures		160	(579)	$ 276	(440)
Unrecognized stock-based compensation expense		1,596		1,596
Fair value of vested restricted stock				$ 0	$ 1,015
Shares tendered back to company (in shares)				0	2,331
Award performance period (in years)				3 years
Restricted Stock Units (RSUs) \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Bonus achievement target level (in percent)				80.00%
Bonus payout as a percentage of target award				50.00%
Restricted Stock Units (RSUs) \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Bonus achievement target level (in percent)				120.00%
Bonus payout as a percentage of target award				150.00%
Restricted Stock Units (RSUs) \| Vesting Period 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)				1 year
Restricted Stock Units (RSUs) \| Vesting Period 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)				3 years
Restricted Stock Units (RSUs) \| Fiscal 2025 - 2027
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Bonus payout as a percentage of target award				200.00%
Employee Stock \| Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (income), net of forfeitures		$ 128	$ 77	$ 165	$ 108