Consolidated Balance Sheet (unaudited) (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 637	$ 662
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)	69,874,782	69,844,782
Common stock, shares outstanding (in shares)	69,865,387	69,835,387
Treasury stock (in shares)	9,395	9,395