Note 11 - Leasing Arrangements (Details Textual) - USD ($)	Feb. 28, 2022	Mar. 01, 2019
Operating Lease, Liability, Total	$ 1,814,153
Operating Lease, Weighted Average Discount Rate, Percent	3.10%
Lessee, Operating Lease, Liability, to be Paid, Total	$ 1,985,679
Accounting Standards Update 2016-02 [Member]
Operating Lease, Liability, Total		$ 3,300,000
Maximum [Member]
Lessee, Operating Lease, Term of Contract (Year)	10 years
Lessee, Operating Lease, Renewal Term (Year)	10 years
Minimum [Member]
Lessee, Operating Lease, Renewal Term (Year)	5 years