Schedule of common stock warrants (Details) - shares |
12 Months Ended | |
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Dec. 31, 2021 |
Dec. 31, 2020 |
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Series B Common Stock Warrants [Member] | ||
Class of Warrant or Right [Line Items] | ||
Outstanding balance | 87,456 | 87,456 |
Issued | ||
Exercised | ||
Outstanding balance | 87,456 | 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 | ||
Outstanding balance | 6,252,954 | 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 | ||
Outstanding balance | 6,340,410 | 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 |
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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 Gross number of share options (or share units) granted during the period. No definition available.
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- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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