Note 3 - Recently Issued Accounting Standards (Details Textual) |
3 Months Ended |
|---|---|
|
Jun. 30, 2018
USD ($)
| |
| Accounting Standards Update 2018-02 [Member] | |
| Tax Cuts and Jobs Act of 2017 Reclassification from AOCI to Retained Earnings Tax Effect | $ 60,365 |