Inventories. (Details) - USD ($)  | 
Jun. 30, 2021  | 
Dec. 31, 2020  | 
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| Inventory Disclosure [Abstract] | ||
| Inventory net | $ 1,800,000 | $ 1,033,000 | 
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- Definition The amount of FIFO (first in first out) inventory present at the reporting date when inventory is also valued using different valuation methods. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- References No definition available. 
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