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Asset Retirement Obligations
 12 Months Ended
Dec. 31, 2024
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligations Asset Retirement Obligations
The Company considers its legal obligation to remediate its facilities upon a decommissioning of its radioactive-related operations as an asset retirement obligation. The Company has production facilities which manufacture and process radioactive materials at its sites in North Billerica, Massachusetts and, through March 1, 2024, Somerset, New Jersey. As of December 31, 2024, the asset retirement liability is measured at the present value of the asset retirement liability expected to be incurred, and is approximately $25.1 million.
The following table provides a summary of the changes in the Company’s carrying value of asset retirement obligations:

(in thousands)Amount
Balance, January 1, 2023$22,543 
Accretion expense373 
Balance, December 31, 202322,916 
Accretion expense428 
Balance, December 31, 2024$23,344 
The Company is required to provide the Massachusetts Department of Public Health financial assurance demonstrating the Company’s ability to fund the decommissioning and decontaminating of its North Billerica, Massachusetts facility in the event of any closure. The Company has provided this financial assurance in the form of a $30.3 million surety bond.