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Note 4 - Inventories (Tables) | 9 Months Ended
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Sep. 30, 2018
Notes Tables |
Schedule Of Inventory Current And Non Current [Table Text Block] |
|  | September 30, 2018 |  |  | December 31, 2017 |
Short-term inventories: |  |  |  |  |  |  |  |
Raw materials |  | $ | 29,471 |  |  | $ | 13,700 |
Work-in-process |  |  | 3,099 |  |  |  | 1,268 |
Finished goods |  |  | 585 |  |  |  | 464 |
Supplies |  |  | 1,587 |  |  |  | 1,623 |
Total short-term inventories |  |  | 34,742 |  |  |  | 17,055 |
Long-term inventories: |  |  |  |  |  |  |  |
Finished goods |  |  | 91 |  |  |  | 820 |
Total inventories |  | $ | 34,833 |  |  | $ | 17,875 |

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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. Includes current and non-current inventory balances. + References No definition available. + Details
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration