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Fair Value Measurements - Narrative (Details) shares in Millions	Aug. 29, 2023 USD ($) shares	Dec. 31, 2023 USD ($) shares	Nov. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Apr. 30, 2023 USD ($)	Dec. 31, 2022 USD ($) shares	Nov. 30, 2022 USD ($)
Fair Value Measurements [Line Items]
Warrants outstanding (in shares) | shares						49.1
Warrants							$ 48,300,000
Thermo Capital Partners LLC | Related Party
Fair Value Measurements [Line Items]
Number of securities called by warrants (in shares) | shares		10.0
Partnership agreement, advancement guarantee		$ 25,000,000
Thermo Capital Partners LLC | Related Party | Common Stock Warrant, Vesting Upon Effectiveness Of Guaranty
Fair Value Measurements [Line Items]
Warrants outstanding (in shares) | shares		5.0
Thermo Capital Partners LLC | Related Party | Common Stock Warrant, Vesting Upon Advances Achievement
Fair Value Measurements [Line Items]
Warrants outstanding (in shares) | shares		5.0
Thermo Capital Partners LLC | Related Party | Common Stock Warrant, Vesting Upon Advances Achievement | Estimate of fair value
Fair Value Measurements [Line Items]
Warrants		$ 0
XCOM Labs, Inc.
Fair Value Measurements [Line Items]
Business combination, equity interest issued (in shares) | shares	60.6
XCOM Labs, Inc. | Common Stock
Fair Value Measurements [Line Items]
Business combination, equity interest issued (in shares) | shares	41.8
Equity issued in business combination, fair value	$ 51,400,000
XCOM Labs, Inc. | Common Stock, Restricted
Fair Value Measurements [Line Items]
Business combination, equity interest issued (in shares) | shares	18.8
Equity issued in business combination, fair value	$ 19,000,000
2023 Funding Agreement
Fair Value Measurements [Line Items]
Debt instrument, fair value			$ 24,300,000		$ 76,000,000
2023 Funding Agreement, Thermo Guarantee
Fair Value Measurements [Line Items]
Debt instrument, fair value			$ 2,000,000		$ 6,900,000
2021 Funding Agreement
Fair Value Measurements [Line Items]
Debt instrument, fair value				$ 76,300,000
Underlying Stock Price and Exercise Price | XCOM Labs, Inc. | Common Stock
Fair Value Measurements [Line Items]
Fair Value of Consideration	1.23
Underlying Stock Price and Exercise Price | XCOM Labs, Inc. | Common Stock, Restricted
Fair Value Measurements [Line Items]
Fair Value of Consideration	1.13
2023 Funding Agreement
Fair Value Measurements [Line Items]
Embedded derivative, fair value		$ 1,300,000
2023 Funding Agreement | Discount rate
Fair Value Measurements [Line Items]
Derivative liability, measurement input		0.0651	0.0914		0.0852
2019 Facility Agreement
Fair Value Measurements [Line Items]
Embedded derivative, fair value		$ 0				$ 100,000
Embedded derivative liability		$ 0
2019 Facility Agreement | Level 3
Fair Value Measurements [Line Items]
Embedded derivative liability						$ 100,000
2023 Funding Agreement, Thermo Guarantee | Discount rate
Fair Value Measurements [Line Items]
Derivative liability, measurement input			0.0672		0.0622
2021 Funding Agreement | Discount rate
Fair Value Measurements [Line Items]
Derivative liability, measurement input				0.0852

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