Note 16 - Subsequent Event (Details) - USD ($) $ in Millions	Nov. 10, 2017	Jan. 01, 2018	Sep. 30, 2017	Mar. 31, 2017
Note 16 - Subsequent Event (Details) [Line Items]
Common Stock, Shares Authorized			4,000,000	4,000,000
Subsequent Event [Member]
Note 16 - Subsequent Event (Details) [Line Items]
Proceeds from Issuance of Convertible Preferred Stock	$ 3
Preferred Stock, Dividend Rate, Percentage	8.00%
Convertible Preferred Stock, Terms of Conversion	convertible into shares of common stock at a price of $3.00 per share
Preferred Stock, Voting Rights	The holders of the Series A Preferred Stock will vote together with the holders of the Company’s Common Stock on an as-converted basis on each matter submitted to a vote of holders of Common Stock (whether at a meeting of shareholders or by written consent). In any such vote, the number of votes that may be cast by a Holder shall be equal to one (1) vote for each Conversion Share underlying such Holder’s outstanding shares of Series A Preferred, subject to adjustment based on the applicable Maximum Conversion Amount, as of the record date for such vote or written consent or, if there is no specified record date, as of the date of such vote or written consent. Each Holder shall be entitled to notice of all shareholder meetings (or requests for written consent) in accordance with the Company’s bylaws.
Subsequent Event [Member] | Scenario, Forecast [Member]
Note 16 - Subsequent Event (Details) [Line Items]
Common Stock, Shares Authorized		6,000,000
Convertible Preferred Stock, Shares Issued upon Conversion		1,000,000