Inventories, net (Details) - USD ($) $ in Thousands  | 
Sep. 30, 2019  | 
Dec. 31, 2018  | 
|---|---|---|
| Inventory Disclosure [Abstract] | ||
| Raw materials | $ 2,735 | $ 2,310 | 
| Work in progress | 261 | 331 | 
| Finished goods | 346 | 730 | 
| Inventories, net | $ 3,342 | $ 3,371 | 
| X | ||||||||||
- References No definition available. 
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| X | ||||||||||
- 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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