Inventories. (Details) - USD ($) $ in Thousands |
Sep. 30, 2020 |
Dec. 31, 2019 |
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| Inventory Disclosure [Abstract] | ||
| Inventory, net of valuation adjustments | $ 32,000 | $ 1,290,000 |
| X | ||||||||||
- 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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| X | ||||||||||
- References No definition available.
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