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Inventory | 3 Months Ended
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Mar. 29, 2019
Inventory Disclosure [Abstract] |
INVENTORY | INVENTORY Inventory consisted of the following (in thousands):
| March 31, 2019 |  | December 31, 2018
Raw materials | $ | 2,245 |  |  | $ | 1,922 |
Work in process | 6,514 |  |  | 6,170 |
Finished goods | 4,862 |  |  | 3,836 |
Total | $ | 13,621 |  |  | $ | 11,928 |
Balance Sheet classification: |  |  |
Current portion included in Inventory | $ | 10,143 |  |  | $ | 9,838 |
Long-term portion included in Other long-term assets | 3,478 |  |  | 2,090 |
Total | $ | 13,621 |  |  | $ | 11,928 |
Write-downs related to excess and expiring inventory are charged to Cost of goods sold or the cost of supplied product included in Collaboration revenues. Such write-downs were $0.2 million for the three months ended March 31, 2019. There were no such write-downs for the three months ended and March 31, 2018. Inventory not expected to be used in production or sold in the next 12 months is classified as Other long-term assets in the accompanying Condensed Consolidated Balance Sheets. As of both March 31, 2019 and December 31, 2018, the long-term portion of inventory consisted of portions of our raw materials and finished goods, and as March 31, 2019, also a portion of our work in process.

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- References No definition available. + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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