Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 112	$ 87
Common stock, par value (usd per share)	$ 0.04	$ 0.04
Common stock, shares authorized (shares)	240,000,000	240,000,000
Common stock, shares issued (shares)	78,025,998	70,875,998
Common stock, shares outstanding (shares)	78,016,603	70,866,603
Treasury stock (shares)	9,395	9,395