STOCK-BASED COMPENSATION AND STOCK OWNERSHIP PLANS (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
Oct. 01, 2021	Oct. 02, 2020	Sep. 27, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares paid for tax withholding (shares)	2,341	4,054
Award performance period	3 years
Discount from fair market value (not less than)	85.00%
Employee stock purchase plan, expense	$ 86	$ 43	$ 27
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Bonus achievement target level	80.00%
Bonus payout as a percentage of target award	50.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Bonus achievement target level	120.00%
Bonus payout as a percentage of target award	150.00%
Restricted Stock and Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefit	$ 581	238	646
Non-vested Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefit	$ 287	252	163
Award vesting period (years)	5 years
Fair value of vested restricted stock	$ 1,950	1,288	1,237
Stock compensation expense	1,179	1,032	667
Unrecognized compensation cost	1,447
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefit	534	166	405
Fair value of vested restricted stock	3,353	1,600	2,945
Stock compensation expense	2,895	$ 1,611	$ 1,652
Unrecognized compensation cost	$ 2,885
Shares tendered back to company (shares)	3,320	3,075
Restricted Stock Units (RSUs) \| Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (years)	1 year
Restricted Stock Units (RSUs) \| Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (years)	3 years
Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant under plan (shares)	501,314
Employee stock purchase plan, shares issued (shares)	0	2,190	1,594

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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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