Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Common stock, par value (in Dollars per share)	$ 0.001	$ 0.001
Common stock, authorized	50,000,000	50,000,000
Common stock, issued	21,572,616	21,843,950
Common stock, outstanding	21,572,616	21,843,950