Note 14 - Stockholders' Equity (Details Textual)			3 Months Ended
	Feb. 07, 2019 shares	Nov. 17, 2017	Sep. 30, 2018	Mar. 31, 2019 shares	Jun. 30, 2018 shares
Conversion of Stock, Shares Issued	7,678,380
Preferred Stock, Shares Outstanding, Ending Balance				53,032	436,951
Series B Convertible Preferred Stock [Member]
Convertible Preferred Stock, Shares Issued upon Conversion				20
Conversion of Stock, Shares Converted	383,919
Preferred Stock, Shares Outstanding, Ending Balance				53,032
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio		30	30