Note C - Revenues - Significant Changes in Deferred Franchise Fees (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Sep. 29, 2024		Sep. 24, 2023	Sep. 29, 2024		Sep. 24, 2023
Franchise [Member]
Deferred franchise fees at beginning of period	$ 1,226		$ 1,608
New deferrals due to cash received and other	75		46
Revenue recognized during the period	(200)		(238)
Deferred franchise fees at end of period	1,101		1,416	$ 1,101		$ 1,416
License Royalties and Advertising Fund [Member]
Deferred franchise fees at beginning of period				1,375	[1]	1,406
New deferrals due to cash received and other				500		500
Revenue recognized during the period				(1,275)		(1,164)
Deferred franchise fees at end of period	$ 600	[1]	$ 742	$ 600	[1]	$ 742

[1] Includes $100 of deferred license royalties and $500 of deferred advertising fund revenue as of September 29, 2024 and $875 of deferred license royalties and $500 of deferred advertising fund revenue as of March 31, 2024.