DESCRIPTION OF BUSINESS (Details) $ in Thousands		1 Months Ended			9 Months Ended
	Nov. 30, 2021 USD ($) shares	May 31, 2023 shares	Mar. 31, 2022	Dec. 31, 2020 USD ($)	Sep. 30, 2023 shares	Dec. 31, 2022 shares	Mar. 16, 2022 shares	Nov. 30, 2021 ¥ / shares shares	Nov. 08, 2017	Aug. 31, 2017
Employee Share Option
Description of Business [Abstract]
Exercise of stock options (in shares)					680,319
Class A Common Stock
Description of Business [Abstract]
Common stock outstanding (in shares)					55,574,734	54,655,286
Stock split ratio			3
Additional shares reserved for issuance as dividends (in shares)							2
Class B Common Stock
Description of Business [Abstract]
Common stock outstanding (in shares)					5,021,811	5,021,811
Additional shares reserved for issuance as dividends (in shares)							2
ACM Research (Shanghai), Inc.
Description of Business [Abstract]
Purchase of equity interest percentage				8.30%					18.36%	18.77%
Percentage of ownership after transaction		82.10%
Name of subsidiaries					ACM Research (Shanghai), Inc.
Place and date of incorporation					Mainland China, May 2005
Effective interest held as at					82.10%	82.50%
ACM Research (Shanghai), Inc. | Employee Share Option
Description of Business [Abstract]
Exercise of stock options (in shares)		2,150,309
ACM Research (Shanghai), Inc. | IPO
Description of Business [Abstract]
Offering of shares (in shares)	43,355,753
Percentage amount of shares offered from shares outstanding								10.00%
Common stock outstanding (in shares)								433,557,100
Share price (in RMB per share) | ¥ / shares								¥ 85.00
Proceeds from issuance initial public offering | $	$ 545,512
Percentage of ownership after transaction	82.50%
ACM Research (Wuxi), Inc.
Description of Business [Abstract]
Name of subsidiaries					ACM Research (Wuxi), Inc.
Place and date of incorporation					Mainland China, July 2011
Effective interest held as at					82.10%	82.50%
CleanChip Technologies Limited
Description of Business [Abstract]
Proceeds from divestiture of interest in consolidated subsidiaries | $				$ 3,500
Name of subsidiaries					CleanChip Technologies Limited
Place and date of incorporation					Hong Kong, June 2017
Effective interest held as at					82.10%	82.50%
ACM Research Korea CO., LTD.
Description of Business [Abstract]
Name of subsidiaries					ACM Research Korea CO., LTD.
Place and date of incorporation					Korea, December 2017
Effective interest held as at					82.10%	82.50%
ACM Research (Lingang), Inc. (1)
Description of Business [Abstract]
Purchase of equity interest percentage				91.70%
Name of subsidiaries					ACM Research (Lingang), Inc. (1)
Place and date of incorporation					Mainland China, March 2019
Effective interest held as at					82.10%	82.50%
ACM Research (CA), Inc.
Description of Business [Abstract]
Name of subsidiaries					ACM Research (CA), Inc.
Place and date of incorporation					USA, April 2019
Effective interest held as at					82.10%	82.50%
ACM Research (Cayman), Inc.
Description of Business [Abstract]
Name of subsidiaries					ACM Research (Cayman), Inc.
Place and date of incorporation					Cayman Islands, April 2019
Effective interest held as at					100.00%	100.00%
ACM Research (Singapore) PTE. Ltd.
Description of Business [Abstract]
Name of subsidiaries					ACM Research (Singapore) PTE. Ltd.
Place and date of incorporation					Singapore, August 2021
Effective interest held as at					100.00%	100.00%
ACM Research (Beijing), Inc.
Description of Business [Abstract]
Name of subsidiaries					ACM Research (Beijing), Inc.
Place and date of incorporation					Mainland China,, February 2022
Effective interest held as at					82.10%	82.50%
Hanguk ACM CO., LTD.
Description of Business [Abstract]
Name of subsidiaries					Hanguk ACM CO., LTD.
Place and date of incorporation					Korea, March 2022
Effective interest held as at					100.00%	100.00%
Yusheng Micro Semiconductor (Shanghai) Co., Ltd
Description of Business [Abstract]
Name of subsidiaries					Yusheng Micro Semiconductor (Shanghai) Co., Ltd
Place and date of incorporation					Mainland China, June 2023
Effective interest held as at					82.10%	0.00%
ACM-Wooil Microelectronics (Shanghai) Co., Ltd
Description of Business [Abstract]
Name of subsidiaries					ACM-Wooil Microelectronics (Shanghai) Co., Ltd
Place and date of incorporation					Mainland China, June 2023
Effective interest held as at					59.40%	0.00%