Note M - Derivatives and Fair Value Measurements - Fair Value of Derivative Instruments (Details) - USD ($) $ in Thousands	Jun. 27, 2020	Sep. 28, 2019
Deferred Tax Liabilities [Member]
Derivative assets (liabilities)	$ 481	$ 324
Accounts Payable and Accrued Liabilities [Member]
Derivative assets (liabilities)	(145)	0
Other Noncurrent Liabilities [Member]
Derivative assets (liabilities)	(1,766)	(1,293)
Accumulated Other Comprehensive Income (Loss) [Member]
Derivative assets (liabilities)	$ (1,430)	$ (969)