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Stockholders' Equity - Warrants (Details) - $ / shares | Sep. 30, 2023 | Dec. 31, 2022
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Class of Warrant or Right [Line Items] |  |
Number of warrants (in shares) | 3,443,844 | 6,632,561
2020 Convertible Note warrant |  |
Class of Warrant or Right [Line Items] |  |
Exercise price per share (in dollars per share) | $ 1.42 | $ 1.42
Number of warrants (in shares) | 0 | 2,811,315
Common stock warrants (Series F) |  |
Class of Warrant or Right [Line Items] |  |
Exercise price per share (in dollars per share) | $ 9.22 | $ 9.22
Number of warrants (in shares) | 0 | 377,402
Public warrants (PHUNW) |  |
Class of Warrant or Right [Line Items] |  |
Exercise price per share (in dollars per share) | $ 11.50 | $ 11.50
Number of warrants (in shares) | 1,761,291 | 1,761,291
Private placement warrants |  |
Class of Warrant or Right [Line Items] |  |
Exercise price per share (in dollars per share) | $ 11.50 | $ 11.50
Number of warrants (in shares) | 1,658,381 | 1,658,381
Unit purchase option warrants |  |
Class of Warrant or Right [Line Items] |  |
Exercise price per share (in dollars per share) | $ 11.50 | $ 11.50
Number of warrants (in shares) | 24,172 | 24,172

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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-3 + Details
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