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CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $)
In Thousands, except Per Share data, unless otherwise specified
Jun. 30, 2013
Mar. 31, 2013
Allowance for doubtful accounts (in dollars) $ 9 $ 5
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized 5,000 5,000
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized 40,000 40,000
Common stock, shares issued 20,109 20,109
Common stock, shares outstanding 20,109 20,109
Convertible Preferred Stock
    
Preferred stock, shares issued 3 3
Preferred stock, shares outstanding 3 3
Preferred stock, liquidation preference (in dollars per share) $ 4 $ 4