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Note 5 - Restricted Cash to support appeal bond	3 Months Ended
Note 5 - Restricted Cash to support appeal bond	Jun. 30, 2019
Cash and Cash Equivalents [Abstract]
Cash and Cash Equivalents Disclosure [Text Block]	Note 5 – Restricted Cash to support appeal bond In January 2018, the Company transferred $2,000,000 to a restricted cash account to secure a letter of credit which was used for collateral for the appeal bond (See Note 13).