Note 6 - Fair Value Measurements - Fair Value of Financial Assets (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands |
Oct. 01, 2022 |
Oct. 02, 2021 |
|---|---|---|
| Cash equivalents | $ 48,045 | $ 86,395 |
| Cash surrender value of life insurance policies | 9,938 | 12,501 |
| Total | 57,983 | 98,896 |
| Fair Value, Inputs, Level 1 [Member] | ||
| Cash equivalents | 48,045 | 86,395 |
| Cash surrender value of life insurance policies | 0 | 0 |
| Total | 48,045 | 86,395 |
| Fair Value, Inputs, Level 2 [Member] | ||
| Cash equivalents | 0 | 0 |
| Cash surrender value of life insurance policies | 9,938 | 12,501 |
| Total | $ 9,938 | $ 12,501 |