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Commitments and Contingencies - Narrative (Details)		1 Months Ended				3 Months Ended		9 Months Ended
	Oct. 15, 2023 EUR (€) ft²	Mar. 31, 2025 USD ($)	Jan. 31, 2025 AUD ($)	Apr. 30, 2024 USD ($)	May 31, 2022 AUD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) licenseAgreement operatingLease performance_obligation	Sep. 30, 2024 USD ($)	May 31, 2025 USD ($)
Commitments and Contingencies [Line Items]
Number of operating leases | operatingLease								5
Total operating lease cost						$ 23,300	$ 18,700	$ 51,300	$ 57,300
Number of performance obligations | performance_obligation								1
Number of license agreements | licenseAgreement								5
Revenues						$ 0	$ 0	$ 0	16,020,000
Proceeds from Line of Credit								2,750,000	0
Repayments of lines of credit								2,750,000	$ 0
Revolving Credit Facility | UBS
Commitments and Contingencies [Line Items]
Line of credit		$ 10,000,000
Debt instrument, basis spread on variable rate		1.50%
Proceeds from Line of Credit								2,800,000
Repayments of lines of credit								$ 2,800,000
Grant
Commitments and Contingencies [Line Items]
Revenues				$ 20,000
Senju Pharmaceutical Co., Ltd | KIO-301
Commitments and Contingencies [Line Items]
Milestone payment earned										$ 1,250,000
Additional option fee										500,000
Upfront maximum payment amount										$ 110,750,000
Minimum
Commitments and Contingencies [Line Items]
Remaining lease term						1 year 3 months 18 days		1 year 3 months 18 days
Maximum
Commitments and Contingencies [Line Items]
Remaining lease term						3 years 1 month 6 days		3 years 1 month 6 days
New Encinitas Lease
Commitments and Contingencies [Line Items]
Payments for rent		$ 8,400
Annual rental payment increase		4.00%
Rent abatement period		3 months
Security deposit		$ 9,400
Tenant improvements		$ 72,800
Lease term		3 years 3 months
Perth and Brisbane Lease
Commitments and Contingencies [Line Items]
Payments for rent			$ 8,900
Security deposit			$ 44,000.0
Lease term			2 years
Brisbane Lease
Commitments and Contingencies [Line Items]
Rent abatement period			2 months
Perth Lease
Commitments and Contingencies [Line Items]
Rent abatement period			3 months
Vienna Lease
Commitments and Contingencies [Line Items]
Payments for rent | €	€ 1,300
Security deposit | €	€ 4,500
Lease term	5 years
Area of land | ft²	910
Adelaide Lease
Commitments and Contingencies [Line Items]
Payments for rent					$ 2,200
Lease term					12 months
Termination period					90 days

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