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Subsequent Events (Details) |  | 1 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jan. 31, 2023 USD ($) employee | Feb. 28, 2023 USD ($) day shares | Mar. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) shares | Dec. 31, 2021 USD ($) shares
Subsequent Event [Line Items] |  |  |  |  |
Common stock, shares issued (in shares) | shares |  |  |  | 253,091,319 | 217,382,887
Common stock, value, issued |  |  |  | $ 253,090 | $ 217,382
Forecast |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Expected charge |  |  | $ 1,100,000 |  |
Subsequent Event |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Number of positions reduced | employee | 24 |  |  |  |
Number of positions reduced (in percent) | 11.00% |  |  |  |
Expected annual savings | $ 4,300,000 |  |  |  |
Subsequent Event | McDermid v. Inovio Pharmaceuticals, Inc. and J. Joseph Kim |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Common stock, shares issued (in shares) | shares |  | 7,000,000 |  |  |
Common stock, value, issued |  | $ 2,100,000 |  |  |
Trading days | day |  | 10 |  |  |

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