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OTHER LONG-TERM ASSETS
 9 Months Ended
Sep. 30, 2023
Other Assets, Noncurrent Disclosure [Abstract]  
OTHER LONG-TERM ASSETS OTHER LONG-TERM ASSETS
At September 30, 2023 and December 31, 2022, other long-term assets consisted of the following:
September 30,
2023		December 31,
2022
Prepayment for property, plant and equipment
$1,286 $704 
Lease deposit
796 393 
Security deposit for land use right687 708 
Prepayment for property - Zhangjiang New Building— 47,251 
Others1,082 1,209 
Total other long-term assets$3,851 $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 Shanghai in February 2023 at value of RMB 338,848 ($47,201). Upon the transfer of ownership, Prepayment for property - Zhangjiang New Building was reclassified to property, plant and equipment (Note 6).