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Inventories (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013
Inventory Disclosure [Abstract] |  |
Losses incurred on valuation of inventory and write-off of obsolete inventory | $ 946 | $ 996
Deferred Costs, Current | 1,698 | 1,520
Current: |  |
Raw materials | 3,056 | 1,362
Finished goods (including distributor channel inventories) | 11,408 | 10,916
Inventory, including distributor channel inventories, net | 14,464 | 12,278
Long-term: |  |
Raw materials | 59 | 227
Finished goods | 817 | 324
Inventories, long-term | $ 876 | $ 551

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