Investment In Radionetics	6 Months Ended
Jun. 30, 2026
Schedule of Investments [Abstract]
Investment in Radionetics	Investment In Radionetics In October 2021, we entered into the Radionetics License with Radionetics, whereby we licensed our radiotherapeutics technology to Radionetics in exchange for 50,500,000 shares of Radionetics' common stock, equivalent to a 64% initial stake, and the Radionetics Warrant, which was exercisable for a number of shares of Radionetics common stock that would allow us to maintain up to 22% equity in Radionetics on a fully diluted basis. In August 2023, we participated in a refinancing transaction, exercising the Radionetics Warrant to purchase 3,407,285 shares of Radionetics common stock, exchanging 32,344,371 shares of Radionetics common stock for Radionetics preferred stock, and investing $5.0 million for an additional 14,404,656 shares of Radionetics preferred stock. The Radionetics License was also amended to include up to $15.0 million in new sales milestones. In June 2024, the Radionetics License was amended to reduce development targets and revert certain rights to us. Under the amended Radionetics License, we are eligible to receive potential sales milestones in excess of $300.0 million and single-digit royalties on net sales. In July 2024, Radionetics formed a strategic partnership with Lilly, receiving a $140.0 million upfront payment and granting Lilly the exclusive right to acquire Radionetics for $1.0 billion. Although Radionetics is a VIE, we determined we are not the primary beneficiary and do not consolidate Radionetics’ results due to lack of control over key decisions, which rests with Radionetics’ independent board and management. We account for our investment in Radionetics under the equity method. As of June 30, 2026, we held a 25% ownership in Radionetics consisting of common and preferred stock. The investment asset was previously written down to zero in the first quarter of 2024 with no gains or losses recorded thereafter. R. Scott Struthers, Ph.D., our President and Chief Executive Officer, serves as chairman of the Radionetics board of directors. Pursuant to such arrangement, Dr. Struthers receives consideration in the form of both equity and a $50 thousand annual retainer for his service as a board member of Radionetics. As of June 30, 2026, Dr. Struthers has an approximately 1.3% ownership stake in Radionetics, consisting of common stock.

In October 2021, we entered into the Radionetics License with Radionetics, whereby we licensed our radiotherapeutics technology to Radionetics in exchange for 50,500,000 shares of Radionetics' common stock, equivalent to a 64% initial stake, and the Radionetics Warrant, which was exercisable for a number of shares of Radionetics common stock that would allow us to maintain up to 22% equity in Radionetics on a fully diluted basis.

In August 2023, we participated in a refinancing transaction, exercising the Radionetics Warrant to purchase 3,407,285 shares of Radionetics common stock, exchanging 32,344,371 shares of Radionetics common stock for Radionetics preferred stock, and investing $5.0 million for an additional 14,404,656 shares of Radionetics preferred stock. The Radionetics License was also amended to include up to $15.0 million in new sales milestones.

In June 2024, the Radionetics License was amended to reduce development targets and revert certain rights to us. Under the amended Radionetics License, we are eligible to receive potential sales milestones in excess of $300.0 million and single-digit royalties on net sales. In July 2024, Radionetics formed a strategic partnership with Lilly, receiving a $140.0 million upfront payment and granting Lilly the exclusive right to acquire Radionetics for $1.0 billion.

Although Radionetics is a VIE, we determined we are not the primary beneficiary and do not consolidate Radionetics’ results due to lack of control over key decisions, which rests with Radionetics’ independent board and management. We account for our investment in Radionetics under the equity method.

As of June 30, 2026, we held a 25% ownership in Radionetics consisting of common and preferred stock. The investment asset was previously written down to zero in the first quarter of 2024 with no gains or losses recorded thereafter.