Loss Per Share - Schedule of antidilutive securities excluded from computation of earnings per share (Details) - shares	9 Months Ended	12 Months Ended
Sep. 30, 2026	Dec. 31, 2025
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	167,715,777	220,792,425
Non-employee warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive warrants excluded from computation of earnings per share (in warrants)	87,008	107,008
Antidilutive securities excluded from computation of earnings per share (in shares)	87,008	107,008
Stock-options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive warrants excluded from computation of earnings per share (in warrants)	15,029,103	14,104,578
Antidilutive securities excluded from computation of earnings per share (in shares)	15,029,103	14,104,578
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive warrants excluded from computation of earnings per share (in warrants)	9,952,395	3,608,347
Antidilutive securities excluded from computation of earnings per share (in shares)	9,952,395	3,608,347
Prefunded warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive warrants excluded from computation of earnings per share (in warrants)	100,962,751	137,991,871
Antidilutive securities excluded from computation of earnings per share (in shares)	142,647,271	202,972,492
PFW 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive warrants excluded from computation of earnings per share (in warrants)	13,116,331	13,116,331
Antidilutive securities excluded from computation of earnings per share (in shares)	13,116,331	13,116,331
BSA from ABSA (March 2025 PIPE Financing)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive warrants excluded from computation of earnings per share (in warrants)		15,635,172
Antidilutive securities excluded from computation of earnings per share (in shares)	0	27,361,551
PFW1 from PFW-BS-PFW (March 2025 PIPE Financing)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive warrants excluded from computation of earnings per share (in warrants)	32,267,060	38,234,712
Antidilutive securities excluded from computation of earnings per share (in shares)	32,267,060	38,234,712
BS from PFW-BS-PFW (March 2025 PIPE Financing)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive warrants excluded from computation of earnings per share (in warrants)		35,348,260
Antidilutive securities excluded from computation of earnings per share (in shares)	0	61,859,455
PFW2 (March 2025 PIPE Financing)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive warrants excluded from computation of earnings per share (in warrants)	55,579,360	35,657,396
Antidilutive securities excluded from computation of earnings per share (in shares)	97,263,880	62,400,443

Antidilutive Warrants Excluded from Computation of EPS, Amount

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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