Revenue and Segment Information (Details 2) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 587,669	$ 498,020
Discontinued Operations [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	0	82,578
Specialist isotopes and related services [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	431,494	321,190
Nuclear fuels [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	90,676	94,252
Helium and LNG [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 65,499	$ 0

Amount of asset recognized for present right to economic benefit.

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+ Details