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Inventory (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016
Inventory Disclosure [Abstract] |  |  |
Raw materials | $ 692 | $ 863 |
Work in process | 2,462 | 2,343 |
Finished goods | 774 | 738 |
Total | 3,928 | 3,944 |
Less: non-current portion included in Other assets | (624) | (606) |
Inventory | 3,304 | $ 3,338 | [1]
Inventory write-down | $ 500 |  |
[1] | The condensed consolidated balance sheet as of December 31, 2016 has been derived from the audited financial statements as of that date.

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