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INCOME TAXES - Narrative (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2023
USD ($)
Subsidiary
Mar. 31, 2022
USD ($)
Dec. 31, 2022
USD ($)
Income Taxes [Abstract]      
Federal statutory income tax rate 21.00%    
Total income tax benefit (expense) $ (2,879) $ 4,011  
Capitalized contract cost, amortization period 15 years    
Unrecognized tax benefits $ 8,448   $ 8,448
Unrecognized tax benefits that would impact effective tax rate 6,066   $ 6,066
Interest or penalties $ 284 $ 71  
Number of subsidiaries | Subsidiary 4    
ACM Research (Shanghai), Inc.      
Income Taxes [Abstract]      
Foreign corporate tax rate 15.00%    
Foreign Tax Authority      
Income Taxes [Abstract]      
Foreign corporate tax rate 25.00%    
Effective period of preferential income tax rate 3 years    
Foreign Tax Authority | Minimum      
Income Taxes [Abstract]      
Foreign corporate tax rate 15.00%    
Foreign Tax Authority | Maximum      
Income Taxes [Abstract]      
Foreign corporate tax rate 25.00%    
Foreign Tax Authority | ACM Research (Shanghai), Inc.      
Income Taxes [Abstract]      
Foreign corporate tax rate     12.50%
Foreign Tax Authority | ACM Research (Shanghai), Inc. | Minimum      
Income Taxes [Abstract]      
Foreign corporate tax rate 15.00%    
Foreign Tax Authority | ACM Research (Wuxi), Inc.      
Income Taxes [Abstract]      
Foreign corporate tax rate 25.00%    
Foreign Tax Authority | ACM Research (Beijing), Inc.      
Income Taxes [Abstract]      
Foreign corporate tax rate 25.00%    
Foreign Tax Authority | ACM Research (Lingang), Inc. (1)      
Income Taxes [Abstract]      
Foreign corporate tax rate 25.00%