Fair Value Measurements. (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
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| Fair Value Disclosures [Abstract] | ||
| Property and equipment held-for-sale at fair value | $ 1,000,000 | $ 58,295,000 |
| Pre-funded warrants | $ 0.001 | |
| Other warrants | $ 9.757 |
| X | ||||||||||
- Definition Other Warrants. No definition available.
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| X | ||||||||||
- Definition Fair value portion of assets classified as held for sale. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. No definition available.
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