Note 9 - Stockholders' Equity (Details Textual)	Jun. 14, 2016 $ / shares shares	Dec. 31, 2016 shares	Nov. 11, 2016 USD ($)	Jun. 13, 2016 shares	Dec. 31, 2015 shares
Share Price Before Reverse Stock Split | $ / shares	$ 2.52
Common Stock, Shares, Outstanding	2,042,020	2,042,000		12,253,117	2,042,000
Common Stock, Shares Authorized		50,000,000			50,000,000
Preferred Stock, Shares Authorized		5,000,000			5,000,000
Stock Repurchase Program [Member]
Stock Repurchase Program, Authorized Amount | $			$ 750,000
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	6