Inventories (Details) - USD ($) $ in Thousands  | 
Sep. 30, 2021  | 
Dec. 31, 2020  | 
|---|---|---|
| Inventory Disclosure [Abstract] | ||
| Raw materials | $ 1,442 | $ 1,724 | 
| Work in progress | 177 | 18 | 
| Finished goods | 132 | 236 | 
| Inventories | $ 1,751 | $ 1,978 | 
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- References No definition available. 
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- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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