Note O - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended		76 Months Ended
	Aug. 05, 2022	Jun. 10, 2022	Jul. 29, 2022	Jun. 26, 2022	Jun. 27, 2021	Jun. 26, 2022	Mar. 11, 2016
Common Stock, Dividends, Per Share, Declared (in dollars per share)		$ 0.45		$ 0.45	$ 0.35
Treasury Stock, Value, Acquired, Cost Method				$ 1,070
Sixth Stock Repurchase Plan [Member]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares)							1,200,000
Treasury Stock, Shares, Acquired (in shares)				20,370		1,086,820
Treasury Stock, Value, Acquired, Cost Method				$ 1,070		$ 38,178
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased (in shares)				113,180		113,180
Stock Repurchase Program, Shares Benchmark for Expiration Date (in shares)				50,000		50,000
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)				$ 52.49
Subsequent Event [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share)	$ 0.45
Subsequent Event [Member] | Sixth Stock Repurchase Plan [Member]
Treasury Stock, Shares, Acquired (in shares)			13,896
Treasury Stock, Value, Acquired, Cost Method			$ 758
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased (in shares)			15,734
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)			$ 54.51