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CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $)
In Thousands, except Share data, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Statement Of Financial Position [Abstract]    
Allowance for doubtful accounts (in dollars) $ 30 $ 30
Preferred stock, par value (in dollars per share) $ 1.00 $ 1.00
Preferred stock, shares authorized 1,000,000 1,000,000
Preferred stock, shares outstanding      
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized 70,000,000 70,000,000
Common stock, shares issued 20,622,889 20,041,863
Common stock, shares outstanding 20,622,889 20,041,863