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Note 4 - Inventories | 12 Months Ended
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Dec. 31, 2017
Notes to Financial Statements |
Inventory Disclosure [Text Block] | 4. Inventories Inventories, net of reserves, consisted of the following:
|  | As of December 31, |
|  | 2017 |  |  | 2016 |
Current: |  |  |  |  |  |  |  |
Raw materials |  | $ | 197 |  |  | $ | 2,291 |
Finished goods |  |  | 14,218 |  |  |  | 9,086 |
Total |  | $ | 14,415 |  |  | $ | 11,377 |
Long-term: |  |  |  |  |  |  |  |
Raw materials |  | $ | 2,682 |  |  | $ | 599 |
Finished goods |  |  | 6,026 |  |  |  | 1,065 |
Total |  | $ | 8,708 |  |  | $ | 1,664 |
Long-term inventory represents inventory held in excess of our current (next 12 months) requirements based on our recent sales and forecasted level of sales. We have developed programs to reduce the inventory to normal operating levels in the near future. We expect to sell the above inventory, net of reserves, at or above the stated cost and believe that no loss will be incurred on its sale. Current finished goods do not include distributor channel inventories in the amounts of approximately $1,555 and $1,530 as of December 31, 2017 and 2016, respectively. Distributor channel inventories represent inventory at distributors and other customers where revenue recognition criteria have not been achieved. The losses incurred on valuation of inventory at the lower of cost or market value and write-off of obsolete inventory amounted to $649, $653 and $496 during the years ended December 31, 2017, 2016 and 2015, respectively.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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