Note 10 - Leasing Arrangements - Lease Expense (Details) - USD ($)
12 Months Ended
Feb. 29, 2020
Feb. 28, 2019
Feb. 28, 2018
Retail Leases [Member]      
Minimum rentals $ 733,190 $ 1,030,536 $ 1,270,240
Less sublease rentals (318,000) (572,000) (603,000)
Contingent rentals 21,600 22,800 26,100
Retail operating lease expense 436,790 481,336 693,340
Trucking Equipment Leases [Member]      
Retail operating lease expense $ 342,297 $ 325,229 $ 225,992