Note 10 - Leasing Arrangements (Details Textual) - USD ($) |
Feb. 29, 2020 |
Mar. 01, 2019 |
|---|---|---|
| Operating Lease, Liability, Total | $ 2,698,765 | |
| Operating Lease, Weighted Average Discount Rate, Percent | 3.40% | |
| Lessee, Operating Lease, Liability, to be Paid, Total | $ 2,984,207 | |
| Accounting Standards Update 2016-02 [Member] | ||
| Operating Lease, Liability, Total | $ 3,300,000 | $ 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 |