Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	31,500,000	31,500,000
Common stock, shares issued (in shares)	9,927,112	9,927,112
Common stock, shares outstanding (in shares)	9,927,112	9,927,112
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	29,038	29,038
Preferred stock, shares outstanding (in shares)	29,038	29,038
Preferred stock, liquidation value	$ 29,038,000	$ 29,038,000