Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Common Stock, Par Value (in dollars per share)	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized (in shares)	100,000,000	100,000,000
Common Stock, Shares Issued (in shares)	51,437,973	51,314,005
Common Stock, Shares Outstanding (in shares)	51,437,973	51,314,005
Preferred Stock, Par Value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred Stock, Shares Authorized (in shares)	10,000,000	10,000,000
Preferred Stock, Shares Issued (in shares)	0	0
Preferred Stock, Shares Outstanding (in shares)	0	0