Condensed Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Sep. 30, 2016	Sep. 16, 2016	Dec. 31, 2015	Jul. 24, 2015	Nov. 30, 2014
Series B Convertible Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.01		$ 0.01
Preferred stock, shares authorized (in shares)	20,000,000		20,000,000
Preferred stock, shares outstanding (in shares)	79,246		1,895,010
Preferred stock, shares authorized (in shares)				20,000,000
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01		$ 0.01
Common stock, shares authorized (in shares)	8,000,000	8,000,000	8,000,000	4,000,000
Common stock, shares outstanding (in shares)	3,404,860		208,259