Note 3 - Revenue From Contracts With Customers (Details Textual)	9 Months Ended
	Nov. 30, 2020
Customers Contracts, Term (Year)	10 years
Maximum [Member]
Customers Contracts, Term (Year)	20 years
Franchise Agreement, Term (Year)	15 years
Minimum [Member]
Franchise Agreement, Term (Year)	10 years