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OTHER LONG-TERM ASSETS
 6 Months Ended
Jun. 30, 2023
Other Assets, Noncurrent Disclosure [Abstract]  
OTHER LONG-TERM ASSETS OTHER LONG-TERM ASSETS
At June 30, 2023 and December 31, 2022, other long-term assets consisted of the following:
June 30,
2023		December 31,
2022
Prepayment for property, plant and equipment and other non-current assets$811 $704 
Prepayment for property - lease deposit793 393 
Security deposit for land use right682 708 
Prepayment for property - Zhangjiang New Building— 47,251 
Others1,102 1,209 
Total other long-term assets$3,388 $50,265 
Prepayment for property - Zhangjiang New Building is for the new corporate headquarters of ACM Shanghai. Pursuant to contractual agreements, ownership of Zhangjiang New Building was transferred to ACM Lingang in February 2023 at a fair value of $49,453. Subsequent to the transfer of ownership, Prepayment for property - Zhangjiang New Building was re-classed to property, plant and equipment (Note 6).