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

Represents the amount of Tax Cuts and Jobs Act of 2017 reclassification from AOCI to retained earnings tax effect.

No definition available.

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