Consolidated Balance Sheets (Parentheticals) - $ / shares	Mar. 31, 2018	Dec. 31, 2017
Preferred stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	20,835,997	18,930,874
Common stock, shares outstanding	20,835,997	18,930,874