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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Per Share data
Jun. 30, 2011
Dec. 31, 2010
Condensed Consolidated Balance Sheets    
Allowance for doubtful accounts $ 371 $ 353
Preferred stock, par value $ 0.0001 $ 0.0001
Preferred stock, shares authorized 5,000 5,000
Preferred stock, shares issued 0 0
Common stock, par value $ 0.0001 $ 0.0001
Common stock, shares authorized 100,000 100,000
Common stock, shares issued 21,834 21,814
Common stock, shares outstanding 21,759 21,739