Note B - Summary of Significant Accounting Policies - Summary of Franchise Openings and Closings for the Nathan's Franchise Restaurant System (Details)	12 Months Ended
	Mar. 26, 2023	Mar. 27, 2022
Franchised restaurants operating at the beginning of the period	239
New franchised restaurants opened during the period	11
Franchised restaurants closed during the period	(18)
Franchised restaurants operating at the end of the period	232	239
Franchised Units [Member]
Franchised restaurants operating at the beginning of the period	239	213
New franchised restaurants opened during the period		54
Franchised restaurants closed during the period		(28)
Franchised restaurants operating at the end of the period	232	239