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LAND USE RIGHT, NET
 6 Months Ended
Jun. 30, 2023
LAND USE RIGHT, NET [Abstract]  
LAND USE RIGHT, NET LAND USE RIGHT, NET
A summary of land use right is as follows:
June 30,
2023		December 31,
2022
Land use right purchase amount$8,818 $9,149 
Less: accumulated amortization(528)(457)
Land use right, net$8,290 $8,692 
In 2020, ACM Shanghai, through its wholly-owned subsidiary ACM Lingang, entered into an agreement for a 50-year land use right in the Lingang region of Shanghai. In July 2020, ACM Lingang began a multi-year construction project for a new 1,000,000 square foot development and production center that will incorporate new manufacturing systems and automation technologies and will provide floor space to support significantly increased production capacity and related research and development activities.
The amortization for the three months ended June 30, 2023 and 2022 was $38 and $50, respectively, and for the six months ended June 30, 2023 and 2022 was $88 and $99, respectively.
The annual amortization of land use right for each of the next five years is as follows:
Year ending December 31,
remainder of 2023$88 
2024176 
2025176 
2026176 
2027 and thereafter7,674 
Total$8,290