Licensing Agreements (Details) - Related Party - USD ($)			3 Months Ended		6 Months Ended		12 Months Ended
	Oct. 11, 2024	May 14, 2024	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Paragon Agreement
Related Party Transaction [Line Items]
Campaign timeline, minimum term (in years)					5 years
Royalty step-down (as percent)			33.00%		33.00%
Royalty term expiration period (in years)					12 years
Termination notice period (in days)					60 days
Sublicensing fee			$ 0		$ 0
Milestone expense recognized			0	$ 5,500,000	2,500,000	$ 5,500,000
Cash milestone payments			2,500,000	3,000,000	2,500,000	3,000,000
Milestone payments, outstanding and payable			0		0		$ 0
Payment for sublicensing fee			$ 0	$ 100,000	0	$ 100,000
SPY002 License Agreement
Related Party Transaction [Line Items]
First milestone payment		$ 3,000,000.0
SPY003 License Agreement
Related Party Transaction [Line Items]
First milestone payment	$ 3,000,000.0
License Agreement
Related Party Transaction [Line Items]
Sublicensing fee, outstanding and payable					0		$ 500,000
Maximum | SPY001 License Agreement
Related Party Transaction [Line Items]
Contingent obligation based on milestones		22,000,000.0
Maximum | SPY002 License Agreement
Related Party Transaction [Line Items]
Contingent obligation based on milestones		$ 22,000,000.0
Sublicensing fee					$ 20,000,000
Maximum | SPY003 License Agreement
Related Party Transaction [Line Items]
Contingent obligation based on milestones	$ 22,000,000.0