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Intangible Assets
 12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets Intangible Assets
In connection with our acquisition of Screw Compression Systems (“SCS”) in January 2005, we acquired certain intangible assets attributable to developed technology and the SCS trade name. Amortization expense attributable to the developed technology recognized in each of the years ending December 31, 2024, 2023 and 2022 was $0.1 million and the asset is fully amortized as of December 31, 2024. During 2024, we fully impaired the trade name intangible asset as we are no longer marketing the associated technology. There were no impairments of these intangible assets during the years ended December 31, 2023 or 2022.

The following table summarizes our intangible assets by major asset class as of the dates presented:

 December 31, 2024December 31, 2023
Useful Life (years)Gross Carrying ValueAccumulated AmortizationNet Book ValueGross Carrying ValueAccumulated AmortizationNet Book Value
Developed technology20$— $— $— $2,505 $2,384 $121 
Trade nameIndefinite— — — 654 — 654 
Total$— $— $— $3,159 $2,384 $775