Note 11 - Subsequent Events (Details Textual) - $ / shares			3 Months Ended
	Jul. 30, 2018	Jul. 27, 2018	Mar. 31, 2018
Subsequent Event [Member] | Variable Interest Entity, Primary Beneficiary [Member] | ACTS Global Healthcare, Inc. [Member]
Variable Interest Entity, Acquisition of Assets, Consideration, Number of Restricted Common Shares	539,447
Private Placement 2016-3 [Member]
Stock Issued During Period, Shares, New Issues			1,901,941
Shares Issued, Price Per Share			$ 0.25
Private Placement 2016-3 [Member] | Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues		1,839,034
Shares Issued, Price Per Share		$ 0.25