Note 5 - Fair Value Measurements - Fair Value of Financial Assets (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Jul. 02, 2022	Oct. 02, 2021
Cash equivalents	$ 57,180	$ 86,395
Cash surrender value of life insurance policies	10,286	12,501
Total	67,466	98,896
Fair Value, Inputs, Level 1 [Member]
Cash equivalents	57,180	86,395
Cash surrender value of life insurance policies	0	0
Total	57,180	86,395
Fair Value, Inputs, Level 2 [Member]
Cash equivalents	0	0
Cash surrender value of life insurance policies	10,286	12,501
Total	$ 10,286	$ 12,501

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant