Note D - Revenues - Significant Changes in Deferred Franchise Fees (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 27, 2021	Jun. 28, 2020
Deferred franchise fees at beginning of period	$ 1,773	$ 1,917
Additions to deferred revenue	530	20
Revenue recognized during the period	(107)	(81)
Deferred franchise fees at end of period	$ 2,196	$ 1,856