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. 31, 2024	Mar. 26, 2023
Franchised restaurants operating at the beginning of the period	232
New franchised restaurants opened during the period	17
Franchised restaurants closed during the period	(19)
Franchised restaurants operating at the end of the period	230	232
Franchised Units [Member]
Franchised restaurants operating at the beginning of the period	232	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	230	232