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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]    
Accounts receivable, allowance for doubtful accounts $ 139 $ 162
Convertible preferred stock, par value $ 0.01 $ 0.01
Convertible preferred stock, shares authorized 2,000,000 2,000,000
Convertible preferred stock, shares issued 500,000 500,000
Convertible preferred stock, shares outstanding 500,000 500,000
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 30,000,000 30,000,000
Common stock, shares issued 8,981,445 8,981,445
Common stock, shares outstanding 8,917,824 8,917,824
Treasury stock, at cost 343,355 167,885