XML 66 R5.htm IDEA: XBRL DOCUMENT v3.19.3
Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)
$ in Thousands
Common Stock [Member]
Common Stock Class A [Member]
Common Stock [Member]
Common Stock Class B [Member]
Additional Paid-In Capital [Member]
Accumulated Surplus (Deficit) [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Total
Beginning balance at Dec. 31, 2017 $ 1 $ 0 $ 49,695 $ (9,961) $ 122 $ 39,857
Beginning balance (in shares) at Dec. 31, 2017 12,935,546 2,409,738        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income attributable to ACM Research, Inc. $ 0 $ 0 0 4,288 0 4,288
Foreign currency translation adjustment 0 0 0 0 (1,077) (1,077)
Exercise of stock options $ 0 $ 0 512 0 0 512
Exercise of stock options (in shares) 245,702 0        
Stock-based compensation $ 0 $ 0 2,771 0 0 2,771
Conversion of Class B common shares to Class A common stock $ 0 $ 0 0 0 0 0
Conversion of Class B common shares to Class A common stock (in shares) 491,315 (491,315)        
Exercise of common stock warrant issued to SMC $ 0 $ 0 2,981 0 0 2,981
Exercise of common stock warrant issued to SMC (in shares) 397,502 0        
Ending balance at Sep. 30, 2018 $ 1 $ 0 55,959 (5,673) (955) 49,332
Ending balance (in shares) at Sep. 30, 2018 14,070,065 1,918,423        
Beginning balance at Jun. 30, 2018 $ 1 $ 0 55,331 (9,526) (209) 45,597
Beginning balance (in shares) at Jun. 30, 2018 13,957,339 1,920,173        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income attributable to ACM Research, Inc. $ 0 $ 0 0 3,853 0 3,853
Foreign currency translation adjustment 0 0 0 0 (746) (746)
Exercise of stock options $ 0 $ 0 217 0 0 217
Exercise of stock options (in shares) 110,976 0        
Stock-based compensation $ 0 $ 0 411 0 0 411
Conversion of Class B common shares to Class A common stock $ 0 $ 0 0 0 0 0
Conversion of Class B common shares to Class A common stock (in shares) 1,750 (1,750)        
Ending balance at Sep. 30, 2018 $ 1 $ 0 55,959 (5,673) (955) 49,332
Ending balance (in shares) at Sep. 30, 2018 14,070,065 1,918,423        
Beginning balance at Dec. 31, 2018 $ 1 $ 0 56,567 (3,387) (857) 52,324
Beginning balance (in shares) at Dec. 31, 2018 14,110,315 1,898,423        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income attributable to ACM Research, Inc. $ 0 $ 0 0 14,950 0 14,950
Foreign currency translation adjustment 0 0 0 0 (2,220) (2,220)
Exercise of stock options $ 0 $ 0 312 0 0 312
Exercise of stock options (in shares) 193,642 0        
Cancellation of stock options $ 0 $ 0 (576) 0 0 (576)
Cancellation of stock options (in shares) 0 0        
Stock-based compensation $ 0 $ 0 2,919 0 0 2,919
Issuance of Class A common stock in connection with public offering $ 1 $ 0 26,462 0 0 26,463
Issuance of Class A common stock in connection with public offering (in shares) 2,053,572 0        
Share repurchase $ 0 $ 0 (2,827) 0 0 (2,827)
Share repurchase (in shares) (214,286) 0        
Conversion of Class B common shares to Class A common stock $ 0 $ 0 0 0 0 0
Conversion of Class B common shares to Class A common stock (in shares) 35,815 (35,815)        
Ending balance at Sep. 30, 2019 $ 2 $ 0 82,857 11,563 (3,077) 91,345
Ending balance (in shares) at Sep. 30, 2019 16,179,058 1,862,608        
Beginning balance at Jun. 30, 2019 $ 1 $ 0 58,101 2,781 (1,168) 59,715
Beginning balance (in shares) at Jun. 30, 2019 14,229,942 1,883,423        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income attributable to ACM Research, Inc. $ 0 $ 0 0 8,782 0 8,782
Foreign currency translation adjustment 0 0 0 0 (1,909) (1,909)
Exercise of stock options $ 0 $ 0 140 0 0 140
Exercise of stock options (in shares) 89,015 0        
Cancellation of stock options $ 0 $ 0 (576) 0 0 (576)
Cancellation of stock options (in shares) 0 0        
Stock-based compensation $ 0 $ 0 1,557 0 0 1,557
Issuance of Class A common stock in connection with public offering $ 1 $ 0 26,462 0 0 26,463
Issuance of Class A common stock in connection with public offering (in shares) 2,053,572 0        
Share repurchase $ 0 $ 0 (2,827) 0 0 (2,827)
Share repurchase (in shares) (214,286) 0        
Conversion of Class B common shares to Class A common stock $ 0 $ 0 0 0 0 0
Conversion of Class B common shares to Class A common stock (in shares) 20,815 (20,815)        
Ending balance at Sep. 30, 2019 $ 2 $ 0 $ 82,857 $ 11,563 $ (3,077) $ 91,345
Ending balance (in shares) at Sep. 30, 2019 16,179,058 1,862,608