Condensed Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Allowance for doubtful trade receivables	$ 176	$ 300
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized	75,000	75,000
Common stock, shares issued	30,896	30,747
Common stock, shares outstanding	30,896	30,747