Note B - Adoption of New Accounting Pronouncements - Remaining Performance Obligations 2 (Details) $ in Thousands	Dec. 23, 2018 USD ($)
Revenue, Remaining Performance Obligation, Amount	$ 3,619
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-12-24
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)	91 days	[1]
Revenue, Remaining Performance Obligation, Amount	$ 80	[1]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)	1 year
Revenue, Remaining Performance Obligation, Amount	$ 318
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-03-30
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)	1 year
Revenue, Remaining Performance Obligation, Amount	$ 309
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-03-29
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)	1 year
Revenue, Remaining Performance Obligation, Amount	$ 299
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-03-28
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)	1 year
Revenue, Remaining Performance Obligation, Amount	$ 259
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-03-27
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)
Revenue, Remaining Performance Obligation, Amount	$ 2,354

[1] Represents franchise fees expected to be recognized for the remainder of the 2019 fiscal year, which includes international development fees expected to be recognized over the duration of one year or less. Amount does not include $350 of franchise fee revenue recognized for the thirty-nine weeks ended December 23, 2018.