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Amount of contingent consideration recognized as part of consideration transferred in asset acquisition.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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Number of shares of investment owned.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

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Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Acquisitions (Details) $ / shares in Units, $ in Thousands, € in Millions									1 Months Ended			3 Months Ended			12 Months Ended
	Jan. 13, 2025 USD ($)	Jul. 03, 2024 USD ($)	Jul. 03, 2024 EUR (€)	Jul. 02, 2024 USD ($)	Jun. 18, 2024 USD ($)	Jun. 15, 2024 USD ($) licensed_asset shares	Jun. 14, 2024	Jan. 08, 2024 USD ($)	Mar. 31, 2025 USD ($) $ / shares shares	Jan. 31, 2025 USD ($) $ / shares shares	Aug. 31, 2024 USD ($)	Mar. 31, 2025 USD ($) $ / shares shares	Sep. 30, 2024 USD ($) $ / shares shares	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($) shares	Mar. 06, 2024 $ / shares shares	Jan. 22, 2024 $ / shares shares
Asset Acquisition [Line Items]
Payments to acquire businesses												$ 50,000		$ 0
Acquisition of exclusive license option												0		28,000
Research and development												$ 36,314		48,024
Perspective Therapeutics, Inc
Asset Acquisition [Line Items]
Conversion ratio							0.1
Radiopharm Theranostics Limited
Asset Acquisition [Line Items]
Equity investment, shares (in shares) \| shares										133,333,333		282,958,513	149,625,180		149,625,180
Share price (in dollars per share) \| $ / shares									$ 0.02	$ 0.04		$ 0.02	$ 0.03
Payments to acquire equity method investments										$ 5,000			$ 5,000
Agreement with Perspective Therapeutics, Inc
Asset Acquisition [Line Items]
Disposal group consideration								$ 8,000
Perspective Therapeutics, Inc
Asset Acquisition [Line Items]
Research and development														28,000
Perspective Therapeutics, Inc \| Licenses
Asset Acquisition [Line Items]
Acquisition of exclusive license option								$ 28,000
Perspective Therapeutics, Inc
Asset Acquisition [Line Items]
Subsidiary, ownership percentage, noncontrolling owner																19.90%
Shares owned (in shares) \| shares						11,677,339			11,677,339			11,677,339
Share price (in dollars per share) \| $ / shares									$ 2.13			$ 2.13
Perspective Therapeutics, Inc, Fully Diluted Basis
Asset Acquisition [Line Items]
Subsidiary, ownership percentage, noncontrolling owner																17.35%
Life Molecular Imaging Ltd
Asset Acquisition [Line Items]
Payments to acquire businesses	$ 350,000
Business combination contingent consideration liability	$ 400,000
Perspective Common Stock
Asset Acquisition [Line Items]
Shares acquired (in shares) \| shares																60,431,039	56,342,355
Percentage of acquired interest																	11.39%
Share price (in dollars per share) \| $ / shares																$ 0.95	$ 0.37
Radiopharm Theranostics Limited
Asset Acquisition [Line Items]
Research and development															$ 2,000
Payment for acquisitions						$ 2,000
Asset acquisition, additional milestone payments						$ 20,000
Number of licensed asset acquired \| licensed_asset						2
Radiopharm Theranostics Limited \| Sales Milestones
Asset Acquisition [Line Items]
Asset acquisition, additional milestone payments						$ 6,500
Meilleur Technologies, Inc
Asset Acquisition [Line Items]
Payment for acquisitions					$ 32,900						$ 10,000
Asset acquisition, additional milestone payments					43,000
Meilleur Technologies, Inc \| Sales Milestones
Asset Acquisition [Line Items]
Asset acquisition, additional milestone payments					830,000
Meilleur Technologies, Inc \| Research Revenue Milestones
Asset Acquisition [Line Items]
Asset acquisition, additional milestone payments					$ 4,000
Life Molecular Imaging, RM2 Technology
Asset Acquisition [Line Items]
Research and development												$ 5,400		$ 36,000
Payment for acquisitions		$ 35,000		$ 1,000
Life Molecular Imaging, RM2 Technology \| Sales Milestones
Asset Acquisition [Line Items]
Asset acquisition, additional milestone payments \| €			€ 280.0
Life Molecular Imaging, RM2 Technology \| Regulatory Milestones
Asset Acquisition [Line Items]
Payment for acquisitions									$ 5,400
Asset acquisition, additional milestone payments \| €			127.5
Life Molecular Imaging, RM2 Technology \| Collaboration Payments
Asset Acquisition [Line Items]
Asset acquisition, additional milestone payments \| €			25.0
Life Molecular Imaging, RM2 Technology \| Development Services
Asset Acquisition [Line Items]
Asset acquisition, additional milestone payments \| €			€ 5.0