Note 5 - Fair Value Measurements - Fair Value of Financial Assets (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Mar. 28, 2026	Sep. 27, 2025
Cash equivalents	$ 15,009	$ 38,396
Cash surrender value of life insurance policies	14,000	13,552
Total	29,009	51,948
Fair Value, Inputs, Level 1 [Member]
Cash equivalents	15,009	38,396
Cash surrender value of life insurance policies	0	0
Total	15,009	38,396
Fair Value, Inputs, Level 2 [Member]
Cash equivalents	0	0
Cash surrender value of life insurance policies	14,000	13,552
Total	$ 14,000	$ 13,552