| Schedule of Inventory |
Inventory as of December 31, 2018 and 2017 consists of the following (in thousands):
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December 31, 2018
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December 31, 2017
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Raw materials and supplies - production locations
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$
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32,941
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$
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37,369
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Raw materials and supplies - customer locations
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6,755
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5,482
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Work-in-process
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5,589
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3,492
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Finished goods
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2,625
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2,433
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Inventory
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$
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47,910
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$
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48,776
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