Condensed Consolidated Balance Sheets (unaudited) (Parentheticals) - Class A common stock - $ / shares	Sep. 30, 2015	Dec. 31, 2014
Common stock, par value (in dollars per shares)	$ 0.0001	$ 0.0001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	12,301,173	2,601,284
Common stock, shares outstanding	12,301,173	2,601,284