Consolidated Balance Sheet (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 124	$ 153
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)	70,420,044	70,382,544
Common stock, shares outstanding (in shares)	70,410,649	70,373,149
Treasury stock (in shares)	9,395	9,395