Note 5 - Recent Accounting Pronouncements (Details Textual) - USD ($) |
Oct. 01, 2018 |
May 31, 2018 |
---|---|---|
Lessee, Operating Lease, Discount Rate | 4.00% | |
Accounting Standards Update 2016-02 [Member] | Scenario, Forecast [Member] | ||
Operating Lease, Right-of-Use Asset | $ 500,000 | |
Operating Lease, Liability, Total | $ 500,000 |