Condensed Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 90	$ 112
Common stock, par value (in dollars per share)	$ 0.04	$ 0.04
Common stock, shares authorized (in shares)	240,000,000	240,000,000
Common stock, shares issued (in shares)	128,221,668	78,025,998
Common stock, shares outstanding (in shares)	128,212,273	78,016,603
Treasury stock (in shares)	9,395	9,395