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Inventory | 6 Months Ended
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Jun. 30, 2017
Inventory | 2. Inventory Inventory consists of the following (in thousands):
|  | June 30, 2017 |  |  | December 31, 2016 |
Raw materials |  | $ | 431 |  |  | $ | — |
Work-in-process |  |  | 2,391 |  |  |  | 2,120 |
Finished goods |  |  | 350 |  |  |  | 211 |
Total inventory |  | $ | 3,172 |  |  | $ | 2,331 |
Work-in-process and finished goods as of June 30, 2017 and December 31, 2016 include conversion costs but not materials cost because the materials used in its production were previously written off. During the three and six months ended June 30, 2017, the Company recorded a write-down of inventory of approximately $1.5 million for inventory that was forecasted to become obsolete due to expiration which is recorded in costs of goods sold in the accompanying condensed consolidated statements of operations.

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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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