Note B - Summary of Significant Accounting Policies - Summary of Franchise Openings and Closings for the Nathan's Franchise Restaurant System (Details) - Franchised Units [Member]	12 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Franchised restaurants operating at the beginning of the period	255	276
New franchised restaurants opened during the period	16	13
Franchised restaurants closed during the period	(55)	(34)
Franchised restaurants operating at the end of the period	216	255