Note 2 - Summary of Significant Accounting Policies (Detail) - Summary of franchise openings and closings for the Nathan’s franchise restaurant system	Mar. 31, 2013	Mar. 25, 2012	Mar. 27, 2011
Franchised Restaurants Operating Beginning of Period [Member]
Restaurants	299	264	246
New Franchised Restaurants Opened During Period [Member]
Restaurants	40	67	40
Franchised Restaurants Closed During Period [Member]
Restaurants	(36)	(32)	(22)
Franchised Restaurants Operating End of Period [Member]
Restaurants	303	299	264