Note O - Repurchase of Common Stock (Details Textual) - USD ($) $ in Thousands	1 Months Ended			3 Months Ended			6 Months Ended
	Mar. 28, 2020	Feb. 29, 2020	Feb. 01, 2020	Mar. 28, 2020	Mar. 30, 2019	Dec. 29, 2018	Mar. 28, 2020	Sep. 28, 2019
Stock Repurchase Program, Authorized Amount								$ 60,000
Treasury Stock, Shares, Acquired (in shares)	46,210	53,761		99,971			3,598,933
Treasury Stock, Value, Acquired, Cost Method				$ 2,029	$ 718	$ 1,711	$ 52,500
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 7,500	$ 8,300	$ 9,500	$ 7,500			$ 7,500