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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Raw materials $ 288 $ 279
Finished goods 1,476 1,694
Inventory Gross 1,764 1,973
Less: Inventory allowance (219) (246)
Inventories, net $ 1,545 $ 1,727 [1]
[1] Amounts derived from the audited financial statements for the year ended December 31, 2012.