Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Revenue (note 3)	$ 144,577	$ 104,395	$ 218,833	$ 146,581
Cost of revenue	75,938	60,238	110,208	82,738
Gross profit	68,639	44,157	108,625	63,843
Operating expenses:
Sales and marketing	11,439	7,664	20,776	14,361
Research and development	20,064	11,367	34,093	28,713
General and administrative	6,706	5,091	14,464	10,040
Total operating expenses	38,209	24,122	69,333	53,114
Income from operations	30,430	20,035	39,292	10,729
Interest income	2,346	2,144	4,131	3,949
Interest expense	(649)	(306)	(1,344)	(567)
Realized gain from sale of trading securities	3,919	0	7,913	0
Unrealized loss on trading securities	(2,455)	(423)	(3,109)	(4,281)
Other income, net	3,724	2,505	2,306	2,742
Equity income in net income of affiliates	3,920	472	3,888	401
Income before income taxes	41,235	24,427	53,077	12,973
Income tax expense (note 19)	(7,638)	(7,679)	(10,517)	(3,668)
Net income	33,597	16,748	42,560	9,305
Less: Net income attributable to non-controlling interests	6,772	4,512	8,590	2,855
Net income attributable to ACM Research, Inc.	26,825	12,236	33,970	6,450
Less: Dilutive effect arising from stock-based awards by ACM Shanghai	(303)	(230)	(395)	(147)
Net income available to common stockholders, diluted	26,522	12,006	33,575	6,303
Comprehensive income (loss):
Net income	33,597	16,748	42,560	9,305
Foreign currency translation adjustment, net of tax	(35,269)	(40,372)	(25,846)	(37,918)
Comprehensive income (loss)	(1,672)	(23,624)	16,714	(28,613)
Less: Comprehensive income (loss) attributable to non-controlling interests	652	(2,248)	4,114	(3,321)
Comprehensive income (loss) attributable to ACM Research, Inc.	$ (2,324)	$ (21,376)	$ 12,600	$ (25,292)
Net income attributable to ACM Research, Inc. per share of common stock (note 2):
Basic (in dollars per share)	$ 0.45	$ 0.21	$ 0.57	$ 0.11
Diluted (in dollars per share)	$ 0.41	$ 0.18	$ 0.52	$ 0.10
Weighted average shares of common stock outstanding used in computing per share amounts (note 2):
Basic (in shares)	59,898,149	59,177,643	59,817,903	59,003,484
Diluted (in shares)	64,929,638	65,478,677	64,968,900	65,772,973