Note B - Adoption of New Accounting Pronouncements - Significant Changes in Deferred Franchise Fees (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2019 USD ($)
Deferred franchise fees at beginning of period	$ 3,139	[1]
Additions to deferred revenue	371
Revenue recognized during the period	(505)
Deferred franchise fees at end of period	$ 3,005

[1] Includes the cumulative effect of adopting ASC 606 of $2,735.