Note J - Stock-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)	3 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)	10 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)	509,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Discount from Market Price, Offering Date	85.00%
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)	0	0	0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 400	$ 3,400	$ 2,100
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value	0
Proceeds from Stock Options Exercised	2,300	13,200	13,100
Share-Based Payment Arrangement, Exercise of Option, Tax Benefit	$ 100	$ 600	$ 100
Incentive Stock Options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)	0	0	0
Non-qualified Stock Options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)	0	0	0
Restricted Stock Units (RSUs) [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 4,300
Performance Shares [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 1,600
Employee Stock Purchase Plan [Member]
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)	22,295	18,243	17,231
Share Price (in dollars per share)	$ 110.22	$ 140.15	$ 121.53
Share-Based Payment Arrangement, Expense	$ 400	$ 500	$ 600

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

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Amount of tax benefit from exercise of option under share-based payment arrangement.

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

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Gross number of share options (or share units) granted during the period.

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