Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 153	$ 662
Common stock, par value	$ 0.04	$ 0.04
Common stock, shares authorized	240,000,000	240,000,000
Common stock, shares issued	70,382,444	69,844,782
Common stock, shares outstanding	70,373,149	69,835,387
Treasury stock, number of shares	9,395	9,395