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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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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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