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Inventories (Tables)
 9 Months Ended
Sep. 30, 2016
Inventory Disclosure [Abstract]  
Schedule of Inventory, Net of Reserves

Inventories, net of reserves, as of September 30, 2016 and December 31, 2015 consisted of the following:

 

    September 30, 2016     December 31, 2015  
Current:                
Raw materials   $ 2,460     $ 2,735  
Finished goods     9,289       10,712  
    $ 11,749     $ 13,447  
Long-term:                
Raw materials   $ 477     $ 375  
Finished goods     1,276       1,643  
    $ 1,753     $ 2,018  
Summary of Losses Incurred on Valuation of Inventory

    Three months ended September 30,     Nine months ended September 30,
    2016     2015     2016     2015
Net loss on valuation of inventory and write-off of obsolete inventory   $ 328     $ 266     $ 458     $ 396