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2. Inventories, net
12 Months Ended
Dec. 31, 2014
Notes to Financial Statements  
2. Inventories, net

Inventories, which are presented net of allowance for obsolete and slow moving inventory, consisted of the following:

 

    December 31,  
    2014     2013  
             
Finished goods   $ 3,826     $ 3,525  
Work in process      5,127       5,702  
Raw materials     3,159       2,348  
    $ 12,112     $ 11,575  

 

Changes in the allowance for obsolete and slow moving inventory are as follows:

 

    Years Ended December 31,  
    2014     2013  
             
Balance, beginning of year   $ 2,960     $ 2,832  
Charged to cost of sales     9       140  
Disposal of inventory     (1,266 )     (12 )
Balance, end of year   $ 1,703     $ 2,960  

 

During the year ended December 31, 2014, the Company disposed of obsolete inventory that had been fully reserved previously.  There was no material impact to the Company’s balance sheet or statement of operations a result of this transaction.