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Inventories | 3 Months Ended
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Mar. 31, 2018
Inventory Disclosure [Abstract] |
Inventories | 3. Inventories Inventories consist of the following (in thousands):
|  | March 31, 2018 |  |  | December 31, 2017 |
Raw materials |  | $ | 772 |  |  | $ | 572 |
Work-in-process |  |  | 2,519 |  |  |  | 1,273 |
Finished goods |  |  | 600 |  |  |  | 812 |
Total inventory |  | $ | 3,891 |  |  | $ | 2,657 |
Work-in-process and finished goods as of March 31, 2018 and December 31, 2017 are substantially all conversion costs because the materials used in its production were previously written off. The Company analyzed its inventory levels to identify inventory that may expire or has a cost basis in excess of its estimated realizable value. The Company performed an assessment of projected sales and evaluated the lower of cost or net realizable value and the potential excess inventory on hand at March 31, 2018. For the three months ended March 31, 2018 the Company recorded a $0.6 million charge to write-off inventory that may expire prior to sale which was recorded as cost of goods sold.

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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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