Note 6 - Intangible Assets (Details Textual) - USD ($)		3 Months Ended		7 Months Ended	12 Months Ended
	Sep. 12, 2016	Mar. 31, 2018	Mar. 31, 2017	Sep. 30, 2018	Dec. 31, 2016
Development of Acquired Technology, Annual Compensation for Specialist	$ 200,000
Noncash or Part Noncash Acquisition, Noncash Consideration, Liability Incurred		$ 4,380,000			$ 5,000,000
Finite-Lived Intangible Asset, Useful Life		16 years
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months		$ 424,812
Finite-Lived Intangible Assets, Amortization Expense, after Year Fourteen		283,216
Adjustments to Additional Paid in Capital, Patent Acquisition Liability Modification		$ 4,380,000
Tesla Digital [Member] | Scenario, Forecast [Member]
Stock Issued During Period, Shares, Purchase of Assets				1,000,000
Patented Technology [Member]
Stock Issued During Period, Value, Purchase of Assets	5,000,000
Noncash or Part Noncash Acquisition, Noncash Consideration, Carrying Value of Properties to be Transferred	2,161,467
Noncash or Part Noncash Acquisition, Noncash Consideration, Original Cost of Property Transferred	$ 202,666