Note B - Summary of Significant Accounting Policies - Summary of Franchise Openings and Closings for the Nathan's Franchise Restaurant System (Details)	Mar. 29, 2015	Mar. 30, 2014	Mar. 31, 2013
Franchised Restaurants Operating Beginning of Period [Member]
Restaurants	324	303	299
New Franchised Restaurants Opened During Period [Member]
Restaurants	36	56	40
Franchised Restaurants Closed During Period [Member]
Restaurants	(64)	(35)	(36)
Franchised Restaurants Operating End of Period [Member]
Restaurants	296	324	303