Note H - Selling, General and Administrative Expense (Details Textual) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Mar. 28, 2020	Mar. 30, 2019	Mar. 28, 2020	Mar. 30, 2019
Production and Distribution Costs	$ 4.8	$ 4.2	$ 9.7	$ 8.4

Amount of expense related to the production and distribution of goods or services to customers and clients.

No definition available.

Name:	us-gaap_ProductionAndDistributionCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration