Schedule of common stock warrants (Details) - shares |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2022 |
Dec. 31, 2021 |
|
| Series B Common Stock Warrants [Member] | ||
| Class of Warrant or Right [Line Items] | ||
| Outstanding balance | 87,456 | 87,456 |
| Issued | ||
| Exercised | (87,456) | |
| Outstanding balance | 0 | 87,456 |
| Series D Common Stock Warrants [Member] | ||
| Class of Warrant or Right [Line Items] | ||
| Outstanding balance | 6,252,954 | 6,252,954 |
| Issued | ||
| Exercised | (2,954) | |
| Outstanding balance | 6,250,000 | 6,252,954 |
| Series B and D Common Stock Warrants [Member] | ||
| Class of Warrant or Right [Line Items] | ||
| Outstanding balance | 6,340,410 | 6,340,410 |
| Issued | ||
| Exercised | (90,410) | |
| Outstanding balance | 6,250,000 | 6,340,410 |
| Series H Warrants [Member] | ||
| Class of Warrant or Right [Line Items] | ||
| Outstanding balance | 689,159 | 689,159 |
| Issued | ||
| Exercised | ||
| Outstanding balance | 689,159 | 689,159 |
| X | ||||||||||
- Definition Share based compensation arrangement by share based payment award non options shares issued in period No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Number of non-option equity instruments exercised by participants. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of equity instruments other than options outstanding, including both vested and non-vested instruments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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