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Intangible Assets, Net
 9 Months Ended
Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets, Net Intangible Assets, Net
The following table presents the components of the Company’s intangible assets, net ($ in thousands):
September 30, 2025December 31, 2024
Gross Carrying AmountAccumulated AmortizationNet Carrying ValueGross Carrying AmountAccumulated AmortizationNet Carrying Value
Finite-lived intangible assets
Commercial products60,799 (6,644)54,155 57,104 (2,637)54,467 
Software4,414 (3,291)1,123 4,360 (2,800)1,560 
Total65,213 (9,935)55,278 61,464 (5,437)56,027 
Intangible assets for commercial products include capitalized post-approval milestone fees and acquired commercial manufacturing know-how and related development costs. The Company is amortizing intangible assets for commercial products as cost of product revenue over the estimated remaining useful life of the related products. Intangible assets for externally purchased software are amortized over three to five years on a straight-line basis.
Amortization expense was $1.5 million and $4.4 million in the three and nine months ended September 30, 2025, respectively, and $0.7 million and $2.3 million in the three and nine months ended September 30, 2024, respectively. The weighted-average remaining amortization period for intangible assets for commercial products and software was 8.8 years and 2.4 years, respectively.