Note 9 - Stockholders' Equity (Details Textual)	Jun. 14, 2016 shares	Mar. 31, 2017 shares	Dec. 31, 2016 shares	Jun. 13, 2016 shares
Common Stock, Shares, Outstanding	2,042,020	2,042,000	2,042,000	12,253,117
Common Stock, Shares Authorized		50,000,000	50,000,000
Preferred Stock, Shares Authorized		5,000,000	5,000,000
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	6