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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) (USD $)
In Thousands, except Share data, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Restricted cash (in Dollars) $ 59 $ 252
Allowances for trade accounts receivable current (in Dollars) $ 158 $ 265
Preferred stock, par value (in Dollars per share) $ 0.0001 $ 0.0001
Preferred stock, shares authorized (in Shares) 2,000,000 2,000,000
Preferred stock, shares issued (in Shares) 0 0
Preferred stock, shares outstanding (in Shares) 0 0
Common stock, par value (in Dollars per share) $ 0.0001 $ 0.0001
Common stock, shares authorized (in Shares) 100,000,000 100,000,000
Common stock, shares issued (in Shares) 49,158,886 44,698,650
Common stock, shares outstanding (in Shares) 49,158,886 44,698,650