Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Unaudited) (Parenthetical)

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Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)
In Thousands, except Per Share data, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Consolidated Balance Sheets [Abstract]    
Allowances for accounts receivable $ 305 $ 289
Preferred stock, par value $ 0.001 $ 0.001
Preferred stock, shares authorized 1,000 1,000
Preferred stock, shares issued      
Preferred stock, shares outstanding      
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 50,000 50,000
Common stock, shares issued 32,769 32,502
Common stock, shares outstanding 30,805 30,538
Treasury stock, shares repurchased 1,964 1,964