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Fair Value of Financial Assets and Liabilities - Additional Information (Details) - USD ($) |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 03, 2024 | May 10, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Jul. 31, 2023 | Apr. 10, 2023 | Dec. 31, 2021
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Fair value, assets, level 1 to level 2 transfers, amount |  |  | $ 0 | $ 0 |  |  |
Fair value, assets, level 2 to level 1 transfers, amount |  |  | 0 | 0 |  |  |
Fair value, assets, transfers into level 3, amount |  |  | 0 | 0 |  |  |
Fair value, assets, transfers out of level 3, amount |  |  | 0 | 0 |  |  |
Fair value of the warrant liability |  |  | $ 4,359,000 | $ 3,598,000 | $ 2,645,000 | $ 4,280,000 | $ 25,962,000
Letter Agreement | Subsequent Event |  |  |  |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Increased total note payments |  | $ 2,175,000 |  |  |  |  |
Letter Agreement | Sanuwave | Subsequent Event |  |  |  |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Initial note payment |  | $ 100,000 |  |  |  |  |
Second note payment | $ 2,075,000 |  |  |  |  |  |
Letter Agreement | Sanuwave | Minimum [Member] | Subsequent Event |  |  |  |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Forbearance extend period |  | Feb. 28, 2024 |  |  |  |  |
Letter Agreement | Sanuwave | Maximum [Member] | Subsequent Event |  |  |  |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Forbearance extend period |  | Jun. 03, 2024 |  |  |  |  |

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