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Inventories
12 Months Ended
Dec. 31, 2011
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]
7.  Inventories

 

Inventories, net of reserves for obsolete inventory, consist of the following:

 

    As of December 31,  
    2011     2010  
    (In thousands)  
Finished goods   $ 1,684     $ 2,517  
Work in process     90       74  
Raw materials and supplies     627       682  
    $ 2,401     $ 3,273  

 

The changes in the reserve for obsolete inventory are summarized as follows:

 

    Year Ended December 31,  
    2011     2010  
    (In thousands)  
Balance at beginning of year   $ 1,304     $ 1,379  
Additions (charged to expense)     320       117  
Deductions     (217 )     (192 )
Balance at end of year   $ 1,407     $ 1,304