7Baggers

ACM Research, Inc
(NASDAQ:ACMR) 

ACMR stock logo

ACM Research, Inc., together with its subsidiaries, develops, manufactures, and sells single-wafer wet cleaning equipment for enhancing the manufacturing process and yield for integrated chips worldwide. It offers space alternated phase shift technology for flat and patterned wafer surfaces, which e...

Founded: 1998
Full Time Employees: 1,209 (Dec 2022)
CEO / Founder: David H. Wang 
Sector: Technology
Industry: Semiconductor Equipment & Materials

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Quarterly
Annual
    Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 
                                       
      revenue
    231,263,000 244,430,000 269,160,000 215,372,000 172,347,000 223,471,000 203,976,000 202,480,000 152,191,000 170,321,000 168,569,000 144,577,000 74,256,000 108,542,000 133,709,000 104,395,000 42,186,000 95,142,000 67,013,000 53,864,000 43,732,000 45,562,000 47,665,000 39,049,000 24,348,000 24,608,000 33,427,000 29,010,000 20,479,000 13,448,750 23,179,000 20,873,000 9,743,000 36,486,686 4,891 
      yoy
    34.18% 9.38% 31.96% 6.37% 13.24% 31.21% 21.00% 40.05% 104.95% 56.92% 26.07% 38.49% 76.02% 14.08% 99.53% 93.81% -3.54% 108.82% 40.59% 37.94% 79.61% 85.15% 42.59% 34.61% 18.89% 82.98% 44.21% 38.98% 110.19% -63.14% 473811.27%     
      qoq
    -5.39% -9.19% 24.97% 24.96% -22.88% 9.56% 0.74% 33.04% -10.64% 1.04% 16.59% 94.70% -31.59% -18.82% 28.08% 147.46% -55.66% 41.98% 24.41% 23.17% -4.02% -4.41% 22.06% 60.38% -1.06% -26.38% 15.23% 41.66% 52.27% -41.98% 11.05% 114.24% -73.30% 745896.44%  
      cost of revenue, including cost of revenue from related parties of 12,483 for the three months ended march 31, 2026 and 9,399 for the three months ended march 31, 2025, respectively
    124,025,000                                   
      gross profit
    107,238,000 99,907,000 113,149,000 104,461,000 82,550,000 110,815,000 104,834,000 96,784,000 79,121,000 79,076,000 88,514,000 68,639,000 39,986,000 53,805,000 65,967,000 44,157,000 19,686,000 45,446,000 29,685,000 21,680,000 18,045,000 19,674,000 20,341,000 19,356,000 10,228,000 12,443,000 16,254,000   6,033,250 10,287,000 8,724,000 5,122,000 17,216,948 2,199 
      yoy
    29.91% -9.84% 7.93% 7.93% 4.33% 40.14% 18.44% 41.00% 97.87% 46.97% 34.18% 55.44% 103.12% 18.39% 122.22% 103.68% 9.09% 131.00% 45.94% 12.01% 76.43% 58.11% 25.14%   106.24% 58.01%   -64.96% 467703.55%     
      qoq
    7.34% -11.70% 8.32% 26.54% -25.51% 5.71% 8.32% 22.32% 0.06% -10.66% 28.96% 71.66% -25.68% -18.44% 49.39% 124.31% -56.68% 53.09% 36.92% 20.14% -8.28% -3.28% 5.09% 89.25% -17.80% -23.45%    -41.35% 17.92% 70.32% -70.25% 782844.43%  
      gross margin %
    46.37% 40.87% 42.04% 48.50% 47.90% 49.59% 51.40% 47.80% 51.99% 46.43% 52.51% 47.48% 53.85% 49.57% 49.34% 42.30% 46.66% 47.77% 44.30% 40.25% 41.26% 43.18% 42.67% 49.57% 42.01% 50.56% 48.63% 0% 0% 44.86% 44.38% 41.80% 52.57% 47.19% 44.96% 
      operating expenses:
                                       
      sales and marketing
    20,688,000 16,143,000 22,311,000 22,102,000 16,343,000 18,380,000 15,759,000 17,135,000 14,173,000 9,440,000 16,803,000 11,439,000 9,337,000 12,395,000 13,133,000 7,664,000 6,697,000 9,273,000 6,363,000 5,789,000 5,308,000 5,249,000 3,924,000 4,595,000 3,005,000 3,223,000 3,886,000   1,941,500 3,229,000 2,682,000 1,855,000 5,496,381 1,036 
      research and development
    36,549,000 44,018,000 39,651,000 33,817,000 27,503,000 27,750,000 27,837,000 25,968,000 23,918,000 32,465,000 26,151,000 20,064,000 14,029,000 17,835,000 15,678,000 11,367,000 17,346,000 12,914,000 7,856,000 7,933,000 5,504,000 5,878,000 4,343,000 5,221,000 3,677,000 3,302,000 3,492,000   1,556,000 2,264,000 2,419,000 1,541,000 5,134,924 1,209 
      general and administrative
    13,824,000 16,711,000 22,264,000 16,848,000 12,927,000 20,696,000 17,054,000 16,088,000 15,798,000 13,797,000 12,387,000 6,706,000 7,758,000 6,905,000 5,520,000 5,091,000 4,949,000 4,133,000 3,671,000 3,627,000 3,783,000 3,115,000 4,568,000 2,204,000 2,328,000 2,069,000 1,846,000   1,578,000 1,390,000 1,292,000 3,630,000 5,882,578 1,264 
      total operating expenses
    71,061,000 76,872,000 84,226,000 72,767,000 56,773,000 66,826,000 60,650,000 59,191,000 53,889,000 55,702,000 55,341,000 38,209,000 31,124,000 37,135,000 34,331,000 24,122,000 28,992,000 26,320,000 17,890,000 17,349,000 14,595,000 14,242,000 12,835,000 12,020,000 9,010,000 8,594,000 9,224,000   5,075,500 6,883,000 6,393,000 7,026,000 16,513,883 3,509 
      income from operations
    36,177,000 23,035,000 28,923,000 31,694,000 25,777,000 43,989,000 44,184,000 37,593,000 25,232,000 23,374,000 33,173,000 30,430,000 8,862,000 16,670,000 31,636,000 20,035,000 -9,306,000 19,126,000 11,795,000 4,331,000 3,450,000 5,432,000 7,506,000 7,336,000 1,218,000 3,849,000 7,030,000   957,750 3,404,000 2,331,000 -1,904,000 703,065 -1,310 
      yoy
    40.35% -47.63% -34.54% -15.69% 2.16% 88.20% 33.19% 23.54% 184.72% 40.22% 4.86% 51.88% -195.23% -12.84% 168.22% 362.60% -369.74% 252.10% 57.14% -40.96% 183.25% 41.13% 6.77%   301.88% 106.52%   36.22% -259947.33%     
      qoq
    57.05% -20.36% -8.74% 22.95% -41.40% -0.44% 17.53% 48.99% 7.95% -29.54% 9.01% 243.38% -46.84% -47.31% 57.90% -315.29% -148.66% 62.15% 172.34% 25.54% -36.49% -27.63% 2.32% 502.30% -68.36% -45.25%    -71.86% 46.03% -222.43% -370.81% -53769.08%  
      operating margin %
    15.64% 9.42% 10.75% 14.72% 14.96% 19.68% 21.66% 18.57% 16.58% 13.72% 19.68% 21.05% 11.93% 15.36% 23.66% 19.19% -22.06% 20.10% 17.60% 8.04% 7.89% 11.92% 15.75% 18.79% 5.00% 15.64% 21.03% 0% 0% 7.12% 14.69% 11.17% -19.54% 1.93% -26.78% 
      interest income
    4,719,000 4,187,000 3,100,000 4,013,000 3,339,000 2,813,000 2,967,000 2,381,000 1,774,000 2,071,000 2,152,000 2,346,000 1,785,000 2,775,000 2,016,000 2,144,000 1,805,000 392,000 33,000 31,000 49,000 63,000 179,000 320,000 335,000 205,000 95,000   5,000 3,000 14,000 3,000 8,993 
      interest expense
    -1,933,000 -1,789,000 -1,851,000 -1,757,000 -1,558,000 -1,228,000 -1,208,000 -932,000 -783,000 -697,000 -640,000 -649,000 -695,000 -669,000 -419,000 -306,000 -261,000 -191,000 -191,000 -194,000 -189,000 -371,000 -272,000 -228,000 -111,000 -207,000 -205,000   833,000 -112,000 -149,000 -103,000 -276,803 -33 
      unrealized loss on short-term investments
    -1,406,000    -1,082,000    -2,595,000 -1,107,000 -1,319,000                         
      other expense
    -9,300,000 -1,004,750 -3,411,000                              -755,000   
      income from equity method investments
    1,749,000 3,895,000 3,670,000 1,773,000 952,000 322,000 1,316,000 -695,000  6,224,000 -160,000                         
      income before income taxes
    30,006,000 20,778,000 49,087,000 38,161,000 27,166,000 56,425,000 42,679,000 40,735,000 26,461,000 31,427,000 31,712,000 41,235,000 11,842,000 16,843,000 37,546,000 24,427,000 -11,454,000 21,770,000 10,884,000 7,349,000 3,052,000 6,400,000 8,273,000 2,355,000 2,267,000 3,016,000 8,761,000   1,233,750 4,314,000 3,379,000 -2,758,000 -321,234 -1,560 
      income tax expense
    -3,771,000 -6,566,000 -2,689,000 -1,891,000 -2,153,000 -17,319,000 -4,007,000 -9,336,000 -4,369,000 -8,129,000 -718,000 -7,638,000            -1,859,000 -304,000        -22,000   
      net income
    26,235,000 14,212,000 46,398,000 36,270,000 25,013,000 39,106,000 38,672,000 31,399,000 22,092,000 23,298,000 30,994,000 33,597,000 8,963,000 14,183,000 27,076,000 16,748,000 -7,443,000 18,615,000 11,150,000 7,334,000 5,822,000 9,198,000 10,020,000 496,000 1,963,000 4,201,000 9,089,000 4,311,000 1,857,000 1,072,000 3,853,000 3,215,000 -2,780,000 -867,763 -1,282 
      yoy
    4.89% -63.66% 19.98% 15.51% 13.22% 67.85% 24.77% -6.54% 146.48% 64.27% 14.47% 100.60% -220.42% -23.81% 142.83% 128.36% -227.84% 102.38% 11.28% 1378.63% 196.59% 118.95% 10.24% -88.49% 5.71% 291.88% 135.89% 34.09% -166.80% -223.54% -300646.02%     
      qoq
    84.60% -69.37% 27.92% 45.00% -36.04% 1.12% 23.16% 42.13% -5.18% -24.83% -7.75% 274.84% -36.80% -47.62% 61.67% -325.02% -139.98% 66.95% 52.03% 25.97% -36.70% -8.20% 1920.16% -74.73% -53.27% -53.78% 110.83% 132.15% 73.23% -72.18% 19.84% -215.65% 220.36% 67588.22%  
      net income margin %
    11.34% 5.81% 17.24% 16.84% 14.51% 17.50% 18.96% 15.51% 14.52% 13.68% 18.39% 23.24% 12.07% 13.07% 20.25% 16.04% -17.64% 19.57% 16.64% 13.62% 13.31% 20.19% 21.02% 1.27% 8.06% 17.07% 27.19% 14.86% 9.07% 7.97% 16.62% 15.40% -28.53% -2.38% -26.21% 
      less: net income attributable to non-controlling interests
    8,928,000 6,163,000 10,509,000 6,510,000 4,633,000 8,026,000 7,768,000 7,189,000 4,659,000 5,598,000 5,315,000 6,772,000 1,818,000 2,374,000 6,072,000 4,512,000 -1,657,000                 -553,465 -327 
      net income attributable to acm research, inc.
    17,307,000 8,049,000 35,889,000 29,760,000 20,380,000 31,080,000 30,904,000 24,210,000 17,433,000 17,700,000 25,679,000 26,825,000 7,145,000 11,809,000 21,004,000 12,236,000 -5,786,000 15,565,000 10,155,000 6,567,000 5,470,000 8,529,000 8,627,000 -81,000 1,705,000 3,944,000 8,782,000   2,286,000 3,853,000 3,215,000  -314,298 -955 
      comprehensive income:
                                       
      foreign currency translation adjustment, net of tax of nil
    27,797,000 3,888,500 9,899,000 3,905,000 1,750,000                               
      comprehensive income
    54,032,000 31,993,000 58,688,000 40,175,000 26,763,000 13,430,000 55,761,000 31,515,000 15,263,000 34,512,000 35,009,000 -1,672,000 18,386,000 35,415,000 -15,340,000 -23,624,000 -4,989,000 22,051,000 10,741,000 10,334,000 4,490,000 15,592,000 15,777,000 738,000 63,000 6,204,000 6,498,000   802,750 3,107,000 2,179,000  -396,255 -1,054 
      less: comprehensive income attributable to non-controlling interests
    16,167,000 10,685,000 13,017,000 7,250,000 4,957,000 4,907,000 10,842,000 7,210,000 3,406,000 5,807,000 7,768,000 652,000 3,462,000 6,232,000 -1,057,000 -2,248,000 -1,073,000                 -368,653 -237 
      comprehensive income attributable to acm research, inc.
    37,865,000 21,308,000 45,671,000 32,925,000 21,806,000 8,523,000 44,919,000 24,305,000 11,857,000 28,705,000 27,241,000 -2,324,000 14,924,000 29,183,000 -14,283,000 -21,376,000 -3,916,000 18,915,000 9,984,000 8,537,000 4,573,000 12,348,000 13,079,000 -872,000 757,000 6,028,000 6,191,000         
      net income attributable to acm research, inc. per share of common stock
                                       
      basic
    0.26 0.338 0.56 0.47 0.32 0.293 0.49 0.39 0.28 0.248 0.43 0.45 0.12 200 350 210 -100 800 520 340 290 460 470  90 210 520   67.5 240 200    
      diluted
    0.24 0.315 0.52 0.44 0.3 0.268 0.45 0.35 0.26 0.225 0.39 0.41 0.11 180 320 180 -90 710 460 300 250 410 400  80 190 450   60 210 180    
      weighted-average shares of common stock outstanding used in computing per share amounts
                                       
      basic
    65,804,254 64,184,776 64,381,296 63,968,763 63,267,834 62,212,569 62,500,903 62,178,369 61,367,184 60,164,670 60,219,218 59,898,149 59,736,764 59,235,975 59,360,790 59,177,643 58,827,390 19,218,236 19,422,546 19,123,659 18,786,870 18,233,361 18,201,943 18,050,841 18,120,363 16,800,623 16,999,746 16,090,937,000 16,044,655  15,915,864,000 15,838,540 15,383,086 6,865,390 5,581,637 
      diluted
    69,769,907 67,311,893 68,414,313 67,464,856 66,952,774 66,237,424 66,671,526 67,057,846 66,242,321 64,870,543 65,450,941 64,929,638 65,058,777 65,341,771 65,612,665 65,478,677 65,950,922 21,785,572 22,042,516 21,807,744 21,868,280 21,183,469 21,555,296 21,516,175 21,066,636 19,135,497 19,354,214 18,604,347,000 18,225,317  18,169,807,000 18,119,733 15,383,086 6,865,390 5,581,637 
      cost of revenue, including cost of revenue from related parties of 19,293 and 45,209 for the three and nine months ended september 30, 2025, respectively, and 11,607 and 28,474 for the three and nine months ended september 30, 2024, respectively
     89,179,750 156,011,000                                 
      realized gain on short-term investments
     13,500  54,000                                
      unrealized gain on short-term investments
     -2,849,000 18,656,000 2,730,000  2,124,000 413,000 1,031,000                            
      unrealized gain on available-for-sale investments, net of tax
      2,391,000                                 
      cost of revenue, including cost of revenue from related parties of 16,518 and 25,917 for the three and six months ended june 30, 2025, respectively and 9,637 and 16,867 for the three and six months ended june 30, 2024, respectively
       110,911,000                                
      other income
       -346,000 -262,000 7,061,000 -5,164,000 1,357,000 3,080,000 -1,714,000 -2,150,000 3,724,000 -1,418,000 -6,634,000 7,207,000 2,505,000 237,000    469,000 -2,444,000 -1,759,000 149,000 677,000 -739,000 1,850,000   303,250 902,000 1,066,000    
      cost of revenue, including cost of revenue from related parties of 9,399 for the three ended march 31, 2025 and 7,230 for the three months ended march 31, 2024 respectively
        89,797,000                               
      realized gain from sale of short-term investments
         1,344,000 171,000  273,000 478,000 656,000                         
      cost of revenue, including cost of revenue from related parties of 15,276 and 46,547 for the three and nine months ended september 30, 2024, respectively, and 7,952 and 37,632 for the three and nine months ended september 30, 2023, respectively
         69,477,000 99,142,000                             
      foreign currency translation adjustment, net of tax
         -26,104,000 17,089,000 116,000 -6,829,000 11,214,000 4,015,000 -35,269,000 9,423,000 21,232,000 -42,416,000 -40,372,000                    
      cost of revenue, including cost of revenue from related parties of 16.1 million and 31.3 million for the three and six months ended june 30, 2024, respectively and 11.3 and 29.7 million for the three and six months ended june 30, 2023, respectively
           105,696,000                            
      cost of revenue, including cost of revenue from related parties of 15.1 million and 18.4 million for the three months ended march 31, 2024 and 2023, respectively
            73,070,000                           
      loss from equity method investments
            -520,000                           
      cost of revenue
             47,565,750 80,055,000 75,938,000 34,270,000 54,737,000 67,742,000 60,238,000 22,500,000 49,696,000 37,328,000 32,184,000 25,687,000 25,888,000 27,324,000 19,693,000 14,120,000 12,165,000 17,173,000   -29,591,000 12,892,000 12,149,000 4,621,000 19,269,738 2,692 
      realized gain from sale of trading securities
               3,919,000 3,994,000 -20,000 1,136,000                     
      unrealized loss on trading securities
               -2,455,000 -654,000    -3,858,000    -1,047,000               
      equity income in net income of affiliates
               3,920,000  3,014,000 1,251,000 472,000 -71,000 3,601,000 421,000 295,000 320,000 116,000 182,000 209,000 148,000 -92,000 -9,000   58,750 117,000 117,000 1,000   
      less: dilutive effect arising from stock-based awards by acm shanghai
               -303,000                        
      net income available to common stockholders, diluted
               26,522,000                        
      equity loss in net loss of affiliates
                -32,000                       
      income tax benefit
                -2,879,000 -2,660,000 -10,470,000 -7,679,000 4,011,000 -3,155,000 266,000 -15,000 2,770,000 2,798,000 1,747,000   1,185,000 328,000   -161,750 -461,000 -164,000  -117.75 278 
      unrealized gain on trading securities
                 1,707,000 -5,281,000 -423,000  -1,210,000 -919,000 3,783,000  3,604,000 8,970,000             
      net income attributable to acm research, inc. per common share
                                       
      basic
    0.26 0.338 0.56 0.47 0.32 0.293 0.49 0.39 0.28 0.248 0.43 0.45 0.12 200 350 210 -100 800 520 340 290 460 470  90 210 520   67.5 240 200    
      diluted
    0.24 0.315 0.52 0.44 0.3 0.268 0.45 0.35 0.26 0.225 0.39 0.41 0.11 180 320 180 -90 710 460 300 250 410 400  80 190 450   60 210 180    
      weighted-average common shares outstanding used in computing per share amounts
                                       
      basic
    65,804,254 64,184,776 64,381,296 63,968,763 63,267,834 62,212,569 62,500,903 62,178,369 61,367,184 60,164,670 60,219,218 59,898,149 59,736,764 59,235,975 59,360,790 59,177,643 58,827,390 19,218,236 19,422,546 19,123,659 18,786,870 18,233,361 18,201,943 18,050,841 18,120,363 16,800,623 16,999,746 16,090,937,000 16,044,655  15,915,864,000 15,838,540 15,383,086 6,865,390 5,581,637 
      diluted
    69,769,907 67,311,893 68,414,313 67,464,856 66,952,774 66,237,424 66,671,526 67,057,846 66,242,321 64,870,543 65,450,941 64,929,638 65,058,777 65,341,771 65,612,665 65,478,677 65,950,922 21,785,572 22,042,516 21,807,744 21,868,280 21,183,469 21,555,296 21,516,175 21,066,636 19,135,497 19,354,214 18,604,347,000 18,225,317  18,169,807,000 18,119,733 15,383,086 6,865,390 5,581,637 
      foreign currency translation adjustment
                    2,454,000 3,436,000 -409,000 3,000,000 -1,332,000 6,394,000 5,757,000 242,000 -1,900,000 2,003,000 -2,591,000   -269,250 -746,000 -1,036,000 705,000 471,508 228 
      change in fair value of financial liability
                          -6,533,000 -5,431,000            
      other income (expenses)
                     -170,750 -255,000 -897,000                
      less: net income attributable to non-controlling interests and redeemable non-controlling interests
                     3,050,000 995,000 767,000 352,000 669,000 1,393,000 577,000            
      less: comprehensive income attributable to non-controlling interests and redeemable non-controlling interests
                     3,136,000 757,000 1,797,000 -83,000 3,244,000 2,698,000 1,610,000            
      less: net income attributable to redeemable non-controlling interests
                            258,000 257,000 307,000         
      less: comprehensive income attributable to redeemable non-controlling interests
                            -694,000 176,000 307,000         
      cost of revenue
                               15,879,000 11,653,000       
      gross profit
                               13,131,000 8,826,000       
      operating expenses:
                                       
      sales and marketing
                               2,924,000 1,869,000       
      research and development
                               3,341,000 2,765,000       
      general and administrative
                               2,205,000 1,941,000       
      total operating expenses, net
                               8,470,000 6,575,000       
      income from operations
                               4,661,000        
      interest income
                               24,000 9,000       
      interest expense
                               -194,000 -139,000       
      other income, net
                               543,000 -261,000       
      equity income in net income of affiliates
                               153,000 116,000       
      income before income taxes
                               5,187,000 1,976,000       
      income tax expense
                               -876,000 -119,000       
      comprehensive income:
                                       
      net income
                               4,311,000 1,857,000       
      foreign currency translation adjustment
                               -968,000 657,000       
      total comprehensive income
                               3,343,000 2,514,000       
      net income per common share
                                       
      basic
                               270 120       
      diluted
                               230 100       
      weighted-average common shares outstanding used in computing per share amounts
                                       
      basic
    65,804,254 64,184,776 64,381,296 63,968,763 63,267,834 62,212,569 62,500,903 62,178,369 61,367,184 60,164,670 60,219,218 59,898,149 59,736,764 59,235,975 59,360,790 59,177,643 58,827,390 19,218,236 19,422,546 19,123,659 18,786,870 18,233,361 18,201,943 18,050,841 18,120,363 16,800,623 16,999,746 16,090,937,000 16,044,655  15,915,864,000 15,838,540 15,383,086 6,865,390 5,581,637 
      diluted
    69,769,907 67,311,893 68,414,313 67,464,856 66,952,774 66,237,424 66,671,526 67,057,846 66,242,321 64,870,543 65,450,941 64,929,638 65,058,777 65,341,771 65,612,665 65,478,677 65,950,922 21,785,572 22,042,516 21,807,744 21,868,280 21,183,469 21,555,296 21,516,175 21,066,636 19,135,497 19,354,214 18,604,347,000 18,225,317  18,169,807,000 18,119,733 15,383,086 6,865,390 5,581,637 
      income from operations
                                2,251,000       
      less: net loss attributable to non-controlling interests
                                       
      less: comprehensive loss attributable to non-controlling interests
                                       
      total comprehensive income attributable to acm research, inc.
                                 802,750 3,107,000     
      weighted-average common shares outstanding used in computing per share amounts
                                       
      basic
    65,804,254 64,184,776 64,381,296 63,968,763 63,267,834 62,212,569 62,500,903 62,178,369 61,367,184 60,164,670 60,219,218 59,898,149 59,736,764 59,235,975 59,360,790 59,177,643 58,827,390 19,218,236 19,422,546 19,123,659 18,786,870 18,233,361 18,201,943 18,050,841 18,120,363 16,800,623 16,999,746 16,090,937,000 16,044,655  15,915,864,000 15,838,540 15,383,086 6,865,390 5,581,637 
      diluted
    69,769,907 67,311,893 68,414,313 67,464,856 66,952,774 66,237,424 66,671,526 67,057,846 66,242,321 64,870,543 65,450,941 64,929,638 65,058,777 65,341,771 65,612,665 65,478,677 65,950,922 21,785,572 22,042,516 21,807,744 21,868,280 21,183,469 21,555,296 21,516,175 21,066,636 19,135,497 19,354,214 18,604,347,000 18,225,317  18,169,807,000 18,119,733 15,383,086 6,865,390 5,581,637 
      total comprehensive income attributable to acm research, inc.
                                   2,179,000  -27,602 -817 
      weighted-average common shares outstanding used in computing per share amounts
                                       
      basic
    65,804,254 64,184,776 64,381,296 63,968,763 63,267,834 62,212,569 62,500,903 62,178,369 61,367,184 60,164,670 60,219,218 59,898,149 59,736,764 59,235,975 59,360,790 59,177,643 58,827,390 19,218,236 19,422,546 19,123,659 18,786,870 18,233,361 18,201,943 18,050,841 18,120,363 16,800,623 16,999,746 16,090,937,000 16,044,655  15,915,864,000 15,838,540 15,383,086 6,865,390 5,581,637 
      diluted
    69,769,907 67,311,893 68,414,313 67,464,856 66,952,774 66,237,424 66,671,526 67,057,846 66,242,321 64,870,543 65,450,941 64,929,638 65,058,777 65,341,771 65,612,665 65,478,677 65,950,922 21,785,572 22,042,516 21,807,744 21,868,280 21,183,469 21,555,296 21,516,175 21,066,636 19,135,497 19,354,214 18,604,347,000 18,225,317  18,169,807,000 18,119,733 15,383,086 6,865,390 5,581,637 
      net loss attributable to acm research, inc.
                                    -2,780,000   
      comprehensive loss
                                    -2,075,000   
      total comprehensive loss attributable to acm research, inc.
                                    -2,075,000   
      net loss per common share
                                       
      basic
                                    -180   
      diluted
                                    -180   
      operating expenses, net:
                                       
      equity in net income of affiliates
                                     36,980 20 
      non-operating income
                                     -132.75 -239 
      net income per common shares
                                       
      basic
                                     -49.28 -0.17 
      diluted
                                     -49.28 -0.17 
      weighted-average common stocks outstanding used in computing per share amounts
                                       
      basic
    65,804,254 64,184,776 64,381,296 63,968,763 63,267,834 62,212,569 62,500,903 62,178,369 61,367,184 60,164,670 60,219,218 59,898,149 59,736,764 59,235,975 59,360,790 59,177,643 58,827,390 19,218,236 19,422,546 19,123,659 18,786,870 18,233,361 18,201,943 18,050,841 18,120,363 16,800,623 16,999,746 16,090,937,000 16,044,655  15,915,864,000 15,838,540 15,383,086 6,865,390 5,581,637 
      diluted
    69,769,907 67,311,893 68,414,313 67,464,856 66,952,774 66,237,424 66,671,526 67,057,846 66,242,321 64,870,543 65,450,941 64,929,638 65,058,777 65,341,771 65,612,665 65,478,677 65,950,922 21,785,572 22,042,516 21,807,744 21,868,280 21,183,469 21,555,296 21,516,175 21,066,636 19,135,497 19,354,214 18,604,347,000 18,225,317  18,169,807,000 18,119,733 15,383,086 6,865,390 5,581,637 
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 
                                         
        assets
                                         
        current assets:
                                         
        cash and cash equivalents
      872,269,000 757,373,000 1,058,909,000 442,088,000 457,240,000 407,445,000 333,472,000 324,031,000 211,305,000 182,090,000 207,101,000 257,420,000 260,387,000 247,951,000 336,275,000 323,716,000 380,311,000 563,067,000 65,036,000 70,209,000 78,796,000 71,766,000 92,203,000 86,397,000 52,283,000 58,261,000 47,264,000 27,578,000 27,367,000 27,124,000 18,238,000 17,435,000 15,186,000 17,681,000 17,074,000 
        restricted cash
      21,866,000 8,589,000 8,430,000 10,798,000 10,586,000 3,865,000 1,782,000 881,000 808,000 1,083,000 560,000 582,000 460,000 500,000 367,000 628,000         58,726,000 59,598,000 26,582,000        433,000 
        short-term time deposits
      358,237,000 366,591,000 30,922,000 31,019,000 17,202,000 17,277,000 20,304,000 27,183,000 48,364,000 80,524,000 75,651,000 6,000,000 2,999,000 70,492,000 66,176,000 70,030,000 74,025,000                   
        short-term investments
      34,662,000 35,524,000 39,976,000 21,115,000 18,319,000 19,373,000 20,351,000 19,597,000 18,648,000 21,312,000 21,844,000                         
        accounts receivable
      526,507,000 504,250,000 476,996,000  387,849,000  370,589,000 293,499,000 296,371,000 283,186,000 248,477,000 200,745,000 186,130,000 182,936,000 188,341,000 154,627,000                    
        other receivables
      53,595,000 48,655,000 50,450,000 43,708,000 35,050,000 41,859,000 57,849,000 53,694,000 51,316,000 40,065,000 36,126,000 34,491,000 36,178,000 29,617,000 15,135,000 16,208,000 23,602,000 18,979,000 13,165,000 10,733,000 11,216,000 9,679,000 6,177,000 7,651,000 3,236,000 2,603,000 2,152,000 2,388,000 2,982,000 3,547,000 1,591,000 1,308,000 1,222,000 2,491,000 2,017,000 
        inventories
      737,995,000 702,631,000 676,409,000 648,278,000 609,567,000 597,984,000 628,720,000 602,927,000 581,140,000 545,395,000 507,431,000 471,094,000 473,299,000 393,172,000 327,792,000 288,080,000 271,538,000 218,116,000 176,609,000 136,852,000 103,226,000 88,639,000 64,182,000 49,772,000 44,987,000 44,796,000 43,506,000 45,494,000 42,253,000 38,764,000 29,809,000 27,531,000    
        advances to related parties
      870,000 2,500,000 927,000 682,000                                
        prepaid expenses and other current assets
      13,352,000 10,567,000 15,143,000 14,303,000 10,677,000                               
        total current assets
      2,619,353,000 2,436,680,000 2,358,162,000 1,645,653,000 1,547,874,000 1,483,379,000 1,445,314,000 1,343,162,000 1,229,356,000 1,176,110,000 1,115,894,000 996,832,000 993,811,000 963,806,000 971,242,000 900,628,000 904,977,000 952,934,000 377,347,000 329,361,000 286,552,000 260,656,000 251,777,000 205,880,000 198,477,000 198,396,000 163,654,000 108,400,000 99,505,000 96,028,000 82,777,000 81,879,000 66,494,000 62,914,000 56,022,000 
        property, plant and equipment
      324,020,000 314,830,000 296,714,000 290,944,000 277,065,000 269,272,000 250,099,000 228,731,000 218,822,000 201,848,000 190,882,000 159,013,000 149,904,000 82,875,000 66,470,000 57,266,000 57,680,000 14,042,000 10,005,000 8,985,000 8,772,000 8,192,000 5,974,000 3,956,000 3,495,000 3,619,000 3,573,000 3,376,000 3,719,000 3,708,000 3,593,000 3,050,000 2,731,000 2,340,000 2,346,000 
        operating lease right-of-use assets
      17,060,000 17,925,000 18,026,000 17,285,000 17,747,000 14,038,000 5,680,000 6,252,000 6,498,000 7,026,000 7,184,000 7,809,000 7,408,000 2,489,000 2,647,000 3,478,000 4,028,000 4,182,000 4,599,000 5,209,000 5,349,000 4,297,000 4,568,000 4,648,000 3,547,000 3,887,000 4,205,000 4,550,000 4,787,000       
        intangible assets
      2,722,000 2,847,000 2,706,000 2,849,000 2,997,000 3,461,000 2,838,000 2,836,000 2,803,000 2,538,000 2,163,000 2,107,000 1,233,000 1,255,000 873,000 661,000 748,000 477,000 556,000 630,000 602,000 554,000 335,000 329,000 307,000 344,000 285,000 307,000 263,000 274,000 300,000 231,000 126,000 106,000 35,000 
        deferred tax assets
      30,224,000 29,389,000 26,641,000 22,341,000 16,457,000 14,781,000 13,400,000 20,898,000 21,360,000 20,271,000 16,486,000 11,249,000 13,035,000 6,703,000 6,576,000 10,767,000 15,303,000 13,166,000 15,795,000 14,691,000 13,908,000 11,076,000 10,093,000 5,763,000 5,212,000 5,331,000 2,309,000 1,635,000 1,669,000 1,637,000 1,230,000 1,278,000 1,345,000 1,294,000 1,433,000 
        long-term investments
      68,467,000 66,035,000 63,556,000 56,723,000 54,814,000 37,063,000 33,655,000 31,898,000 31,293,000 27,880,000 22,306,000 16,122,000 17,265,000 17,459,000 18,538,000 12,612,000 12,666,000 12,694,000 7,408,000 7,006,000 6,632,000 6,340,000 6,580,000 20,360,000 6,015,000 5,934,000 5,968,000 1,738,000        
        other long-term assets
      4,052,000 4,479,000 4,838,000 3,920,000 3,421,000 20,452,000 21,352,000 10,917,000 10,471,000 6,050,000 3,851,000 3,388,000 3,479,000 50,265,000 2,373,000 2,520,000 3,559,000 45,017,000 44,243,000 43,434,000 40,475,000 40,496,000 8,008,000 16,466,000 155,000 192,000 222,000 263,000  40,000 41,000 40,000    
        total assets
      3,065,898,000 2,872,185,000 2,770,643,000 2,039,715,000 1,933,768,000 1,855,721,000 1,794,175,000 1,667,575,000 1,556,749,000 1,490,908,000 1,410,248,000 1,316,914,000 1,312,751,000 1,235,500,000 1,147,666,000 1,071,524,000 1,087,372,000 1,052,179,000 469,509,000 418,958,000 371,819,000 341,257,000 296,619,000 257,402,000 217,208,000 217,703,000 180,216,000 120,269,000 111,419,000 103,047,000 89,413,000 87,833,000 71,934,000 67,891,000 61,056,000 
        liabilities and equity
                                         
        current liabilities:
                                         
        short-term borrowings
      93,981,000 74,041,000 45,049,000 52,969,000 24,951,000 32,814,000 33,795,000 54,439,000 54,706,000 31,335,000 33,911,000 53,976,000 56,745,000 56,004,000 50,688,000 4,898,000 9,600,000 9,591,000 15,201,000 22,162,000 23,490,000 26,147,000 28,327,000 25,772,000 3,892,000 13,753,000 15,665,000 15,110,000 12,829,000 9,447,000 10,163,000 9,932,000 10,376,000 5,095,000 3,472,000 
        current portion of long-term borrowings
      13,302,000 35,082,000 48,637,000 62,139,000 67,935,000 44,472,000 30,670,000 19,671,000 6,549,000 6,783,000 6,717,000 3,239,000 2,369,000 2,322,000 2,260,000 2,328,000 2,441,000 2,410,000 2,351,000 1,799,000 1,598,000 1,591,000              
        related parties accounts payable
      31,791,000 32,060,000 23,323,000 19,827,000                                
        accounts payable
      208,867,000 215,440,000 180,884,000 148,780,000 116,441,000 139,294,000 170,810,000 142,418,000 135,499,000 141,814,000 136,675,000 106,861,000 116,558,000 101,735,000 92,325,000 93,902,000 108,494,000 101,350,000 92,825,000 67,031,000 44,721,000 35,603,000 35,639,000 27,986,000 18,616,000 13,262,000 15,440,000 18,238,000 13,333,000 16,673,000 11,991,000 17,755,000 5,525,000 7,419,000 8,667,000 
        advances from customers
      168,825,000 187,809,000 203,506,000 221,446,000 241,456,000 243,949,000 215,678,000 205,609,000 182,547,000 181,368,000 191,393,000 195,485,000 180,453,000 153,773,000 136,610,000 94,421,000 82,036,000 52,824,000 52,681,000 43,845,000 32,668,000 17,888,000 8,011,000 8,780,000 9,236,000 9,129,000 8,397,000 5,684,000 8,469,000 8,417,000 3,918,000 1,931,000 264,000 143,000 75,000 
        deferred revenue
      10,954,000 17,388,000 15,550,000 13,660,000 10,781,000 8,537,000 10,138,000 5,279,000 4,405,000 3,687,000 4,747,000 5,050,000 4,400,000 4,174,000 4,911,000 2,950,000 2,699,000 3,180,000 2,403,000 2,348,000 1,315,000 1,343,000 819,000 474,000            
        income taxes payable
      24,780,000 991,000  253,000 6,168,000 12,779,000 6,796,000 11,136,000 11,403,000 6,401,000 11,061,000 10,324,000 8,579,000 3,469,000 8,564,000 2,032,000 -1,744,000 254,000 1,233,000 482,000 105,000 31,000 3,589,000 1,669,000 3,347,000 3,129,000 1,326,000 1,016,000 1,228,000 1,193,000 689,000 231,000 44,000 44,000  
        fin-48 payable
      28,308,000 27,719,000 21,768,000 21,373,000 19,483,000 19,466,000 8,991,000 12,093,000 12,131,000 12,149,000 6,487,000 6,446,000 6,774,000 6,686,000 2,054,000 2,171,000 2,292,000 2,282,000 83,000 83,000 82,000 83,000              
        other payables and accrued expenses
      160,075,000 150,396,000 135,032,000 126,787,000 118,814,000 121,657,000 115,388,000 114,940,000 107,098,000 102,951,000 80,400,000 59,997,000 52,966,000 52,201,000 40,281,000 39,195,000 36,555,000 31,735,000 25,950,000 21,871,000 21,885,000 18,805,000 18,494,000 15,357,000 14,331,000 12,874,000 13,970,000 11,993,000 11,834,000 10,410,000 8,090,000 6,518,000 6,542,000 6,026,000 5,264,000 
        current portion of operating lease liabilities
      4,795,000 4,786,000 4,120,000 3,778,000 3,564,000 2,132,000 2,377,000 2,573,000 2,668,000  2,876,000                         
        total current liabilities
      745,678,000 745,712,000 677,869,000 671,012,000 628,878,000 641,233,000 610,035,000 586,170,000 533,249,000 500,659,000 481,951,000 456,299,000 450,211,000 396,214,000 345,602,000 252,733,000 244,449,000 205,939,000 195,207,000 162,058,000 128,035,000 102,908,000 96,267,000 96,516,000 50,767,000 53,502,000 56,148,000 53,401,000 49,019,000 46,140,000 34,851,000 36,367,000 22,751,000 21,817,000 20,566,000 
        long-term borrowings
      220,858,000 178,930,000 193,356,000 162,991,000 134,540,000 105,525,000 106,069,000 70,833,000 53,408,000 53,952,000 39,753,000 15,899,000 18,245,000 18,687,000 18,810,000 20,642,000 22,344,000 22,957,000 23,080,000 18,717,000 17,444,000 17,979,000              
        long-term operating lease liabilities
      4,125,000 5,069,000 5,882,000 5,496,000 6,149,000 3,840,000 3,303,000 3,679,000 3,830,000  4,308,000                         
        other long-term liabilities
      11,765,000 11,965,000 8,322,000 8,527,000 8,848,000 9,217,000 5,685,000 5,505,000 5,469,000 5,873,000 6,106,000 6,566,000 7,195,000 7,321,000 6,660,000 8,063,000 8,545,000 8,447,000 5,303,000 4,557,000 6,639,000 8,034,000 6,454,000 6,584,000 5,830,000 4,186,000 2,980,000 3,963,000 3,296,000 4,583,000 5,230,000 5,869,000 6,181,000 6,217,000 6,682,000 
        total liabilities
      982,426,000 941,676,000 885,429,000 848,026,000 778,415,000 759,815,000 725,092,000 666,187,000 595,956,000 564,746,000 532,118,000 483,531,000 480,046,000 423,329,000 373,568,000 284,379,000 278,598,000 240,514,000 227,002,000 189,402,000 156,572,000 133,087,000 105,901,000 106,417,000 58,799,000 60,220,000 61,983,000 60,554,000 55,777,000 50,723,000 40,081,000 42,236,000 28,932,000 28,034,000 27,248,000 
        commitments and contingencies
                                         
        equity:
                                         
        stockholders’ equity:
                                         
        class a common stock
      6,000 6,000 6,000 6,000 6,000 6,000 6,000 6,000 6,000 6,000 6,000 5,000 5,000 5,000 5,000                     
        class b common stock
      1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000                     
        additional paid-in capital
      1,194,786,000 1,115,504,000 1,105,129,000 704,570,000 700,191,000 677,476,000 669,540,000 659,462,000 646,800,000 629,845,000 620,210,000 612,699,000 606,398,000 604,089,000 601,431,000 599,138,000                    
        retained earnings
      367,735,000 350,428,000 346,029,000 310,140,000 280,380,000 260,000,000 229,374,000 198,470,000 174,260,000 156,827,000 152,306,000 124,284,000 101,410,000 94,426,000 91,186,000 70,182,000                    
        statutory surplus reserve
      34,164,000 34,164,000 30,514,000 30,514,000 30,514,000 30,514,000 30,060,000 30,060,000 30,060,000 30,060,000 16,881,000 16,881,000 16,881,000 16,881,000 8,312,000 8,312,000                    
        accumulated other comprehensive loss
      -15,182,000 -35,740,000 -48,999,000 -58,781,000 -61,946,000 -63,372,000 -40,815,000 -54,830,000 -54,925,000 -49,349,000 -60,354,000 -61,916,000 -32,768,000           -3,415,000 -2,623,000 -1,675,000 -3,077,000 -1,168,000 -200,000    827,000  -109,000 
        total acm research, inc. stockholders’ equity
      1,581,510,000 1,464,363,000 1,432,680,000 986,450,000 949,146,000 904,625,000 888,166,000 833,169,000 796,202,000 767,390,000 729,050,000 691,954,000 691,927,000 674,856,000 643,015,000 655,005,000 674,386,000 676,204,000 173,016,000 160,823,000 148,311,000 141,150,000 126,942,000 89,907,000           5,793,000 
        non-controlling interests
      501,962,000 466,146,000 452,534,000 205,239,000 206,207,000 191,281,000 180,917,000 168,219,000 164,591,000 158,772,000 149,080,000 141,429,000 140,778,000 137,315,000 131,083,000 132,140,000 134,388,000 135,461,000 69,491,000 68,733,000 66,936,000 67,020,000 63,776,000 61,078,000           4,181,000 
        total equity
      2,083,472,000 1,930,509,000 1,885,214,000 1,191,689,000 1,155,353,000 1,095,906,000 1,069,083,000 1,001,388,000 960,793,000 926,162,000 878,130,000 833,383,000 832,705,000 812,171,000 774,098,000 787,145,000                    
        total liabilities and equity
      3,065,898,000 2,872,185,000 2,770,643,000 2,039,715,000 1,933,768,000 1,855,721,000 1,794,175,000 1,667,575,000 1,556,749,000 1,490,908,000 1,410,248,000 1,316,914,000 1,312,751,000 1,235,500,000 1,147,666,000 1,071,524,000                    
        long-term time deposits
          13,393,000 13,275,000 13,517,000 14,656,000 27,841,000 40,818,000 43,183,000 112,104,000 117,855,000 101,956,000 70,400,000 74,500,000 78,750,000                   
        account receivables
         433,662,000  387,045,000                              
        advances to related party
          1,384,000 1,024,000 1,453,000 2,756,000 1,338,000 2,432,000 1,164,000 1,155,000 2,306,000 3,322,000 5,158,000 3,073,000                    
        related party accounts payable
          19,285,000 16,133,000 15,392,000 18,012,000 16,243,000 11,407,000 7,684,000 11,879,000 18,354,000 14,468,000 6,589,000 9,062,000                    
        prepaid expenses
           7,507,000 10,794,000 18,594,000 20,066,000 20,023,000 17,540,000 18,970,000 19,319,000 15,607,000 17,771,000 18,851,000 21,771,000 16,639,000 7,531,000 8,953,000 5,917,000 5,892,000 5,531,000 3,157,000 1,985,000 2,047,000 1,006,000 1,547,000 1,833,000 1,985,000 2,142,000 2,316,000 2,383,000 546,000 801,000 
        land use right
            8,320,000 8,225,000 8,305,000 8,367,000 8,299,000 8,290,000 8,761,000 8,692,000 8,547,000 9,092,000 9,661,000 9,667,000 9,556,000 9,642,000 9,529,000 9,646,000 9,284,000             
        current portion of operating lease liability
               2,764,000  3,042,000 3,013,000 1,382,000 1,320,000 1,774,000 2,076,000 2,313,000 2,480,000 2,437,000 2,171,000 1,417,000 1,388,000 1,331,000 1,345,000 1,355,000 1,350,000 1,360,000 1,326,000       
        long-term operating lease liability
               4,262,000  4,767,000 4,395,000 1,107,000 1,327,000 1,704,000 1,952,000 1,869,000 2,119,000 2,772,000 3,178,000 2,880,000 3,180,000 3,317,000 2,202,000 2,532,000 2,855,000 3,190,000 3,462,000       
        trading securities
                 6,375,000 12,733,000 20,209,000 14,164,000 23,894,000 25,772,000 29,498,000 30,219,000 31,257,000 27,003,000 28,239,000 23,888,000             
        income tax receivable
                    63,000 1,521,000                    
        deferred tax liability
                    1,169,000 1,237,000 1,308,000 1,302,000 1,293,000 1,298,000 1,276,000 1,286,000              
        accumulated other comprehensive income
                   -40,546,000 -57,920,000 -22,633,000 10,979,000 9,109,000 5,759,000 5,931,000 3,961,000 4,857,000 1,037,000       -857,000 -955,000 -209,000  122,000  
        common stock
                     5,000                    
        accounts receivables
                      106,351,000 105,553,000 84,787,000 71,357,000 60,394,000 56,441,000 59,796,000 58,903,000 37,260,000 31,091,000 43,144,000 31,393,000 25,070,000 24,608,000 30,965,000 33,289,000 27,793,000 26,762,000 15,784,000 
        income tax recoverable
                      1,607,000 1,082,000                  
        liabilities and stockholders’ equity
                                         
        common stock – class a, par value 0.0001...
                      5,000 2,000 2,000 2,000 2,000 2,000 2,000 2,000 2,000 2,000 2,000 1,000 1,000 1,000 1,000 1,000 1,000   
        common stock –class b, par value 0.0001...
                      1,000                   
        additional paid in capital
                      597,143,000 595,049,000 110,776,000 108,566,000 104,591,000 102,004,000 100,145,000 76,189,000 84,351,000 83,487,000 82,857,000 58,101,000 57,371,000 56,567,000 55,959,000 55,331,000 54,915,000 49,695,000 19,244,000 
        accumulated surplus
                      66,258,000 72,044,000 56,479,000 46,324,000 39,757,000 34,287,000 25,758,000 17,131,000 17,212,000 15,507,000 11,563,000 2,781,000        
        total stockholders’ equity
                      808,774,000 811,665,000 242,507,000 229,556,000 215,247,000 208,170,000 190,718,000 150,985,000 98,942,000 97,321,000 91,345,000 59,715,000 55,642,000 52,324,000 49,332,000 45,597,000 43,002,000 39,857,000 9,974,000 
        total liabilities and stockholders’ equity
                      1,087,372,000 1,052,179,000 469,509,000 418,958,000 371,819,000       120,269,000 111,419,000 103,047,000 89,413,000 87,833,000 71,934,000   
        common stock–class b, par value 0.0001...
                                         
        liabilities, redeemable non-controlling interests and stockholders’ equity
                                         
        redeemable non-controlling interests
                              59,467,000 60,162,000 26,888,000         
        total liabilities, redeemable non-controlling interests, and stockholders’ equity
                           341,257,000 296,619,000 257,402,000 217,208,000 217,703,000 180,216,000         
        financial liability carried at fair value
                             15,147,000            
        investment in affiliates, equity method
                                  1,476,000 1,360,000 1,472,000 1,355,000 1,238,000 1,237,000  
        accumulated deficit
                                  -1,530,000 -3,387,000 -5,673,000 -9,526,000 -12,741,000 -9,961,000 -13,344,000 
        other current assets
                                    32,000  45,000 46,000 890,000 
        warrant liability
                                       3,079,000 3,033,000 
        common stock – class b, par value 0.0001...
                                         
        inventory
                                      19,865,000 15,388,000 18,077,000 
        liabilities, redeemable convertible preferred stock and stockholders’ equity
                                         
        notes payable
                                       11,000 11,000 
        investors’ deposits
                                         
        redeemable convertible preferred stock, with par value 0.0001...
                                         
        series a: 385,000 shares authorized, no shares issued or outstanding as of december 31, 2017; 385,000 shares issued and outstanding as of december 31, 2016
                                         
        series b: 1,572,000 shares authorized, no shares issued or outstanding as of december 31, 2017; 1,572,000 issued and outstanding as of december 31, 2016
                                         
        series c: 1,360,962 shares authorized, no shares issued or outstanding as of december 31, 2017; 1,360,962 issued and outstanding as of december 31, 2016 (liquidation value of 0 and 2,041 at december 31,2017 and 2016).
                                         
        series d: 2,659,975 shares authorized, no shares issued or outstanding as of december 31, 2017; 1,326,642 shares issued and outstanding as of december 31, 2016
                                         
        series e: 10,718,530 shares authorized, no shares issued or outstanding as of december 31, 2017 and 2016
                                         
        series f: 6,000,000 shares authorized, no shares issued or outstanding as of december 31, 2017; 3,663,254 issued and outstanding as of december 31, 2016
                                         
        total redeemable convertible preferred stock
                                        23,834,000 
        stockholders’ equity
                                         
        common stock – class a, with par value 0.0001...
                                       1,000 1,000 
        common stock – class b, with par value 0.0001...
                                        1,000 
        total acm research, inc. stockholders’ (deficit) equity
                                       39,857,000  
        total liabilities, redeemable convertible preferred stock and stockholders’ equity
                                       67,891,000 61,056,000 
        loans receivable – related party
                                        946,000 
        investment in equity method affiliates
                                        1,220,000 
        investors’ deposit
                                         
        income tax payable
                                        44,000 
        redeemable convertible preferred stock, par value 0.0001...
                                         
        series a: 385,000 shares authorized, issued and outstanding as of september 30, 2017 and december 31, 2016 (liquidation value of 308 at september 30, 2017 and december 31, 2016); and no shares authorized, issued or outstanding pro forma as of september 30, 2017
                                        288,000 
        series b: 1,572,000 shares authorized, issued and outstanding as of september 30, 2017 and december 31, 2016 (liquidation value of 1,572 at september 30, 2017 and december 31, 2016) and no shares authorized, issued or outstanding pro forma as of september 30, 2017
                                        1,572,000 
        series c: 1,360,962 shares authorized, issued and outstanding as of september 30, 2017 and december 31, 2016 (liquidation value of 2,041 at september 30, 2017 and december 31, 2016); and no shares authorized, issued or outstanding, pro forma as of september 30, 2017
                                        2,041,000 
        series d: 2,659,975 shares authorized and 1,326,642 shares issued and outstanding as of september 30, 2017 and december 31, 2016 (liquidation value of 4,975 at september 30, 2017 and december 31, 2016); and no shares authorized, issued or outstanding, pro forma as of september 30, 2017
                                        4,975,000 
        series e: 10,718,530 shares authorized, 4,998,508 shares issued and outstanding as of september 30, 2017 (liquidation value of 4,999 at september 30, 2017); and no shares authorized, issued or outstanding as of december 31, 2016 and pro forma as of september 30, 2017
                                        5,800,000 
        series f: 6,000,000 shares authorized, 3,663,254 shares issued and outstanding as of september 30, 2017 and december 31, 2016 (liquidation value of 9,158 at september 30, 2017 and december 31, 2016); and no shares authorized, issued or outstanding pro forma as of september 30, 2017
                                        9,158,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 
                                          
          cash flows from operating activities:
                                          
          net income
        26,235,000 14,212,000 46,398,000 36,270,000 25,013,000 39,106,000 38,672,000 31,399,000 22,092,000 23,298,000 30,994,000 33,597,000 8,963,000 14,183,000 19,633,000 24,191,000 -7,443,000 18,615,000 11,150,000 7,334,000 5,822,000 9,198,000 10,020,000 496,000 1,963,000 4,201,000 9,089,000 6,166,143 1,857 2,286,000 4,287,565    
          adjustments to reconcile net income to net cash from operating activities:
                                          
          non-cash operating lease cost
        1,182,000 1,206,000 1,257,000 995,000 1,086,000 967,000 844,000 1,031,000 973,000 941,000                         
          depreciation and amortization
        5,466,000 5,868,000 4,104,000 3,339,000 3,017,000 2,894,000 2,389,000 2,166,000 2,518,000 2,071,000 2,066,000 2,241,000 1,714,000 1,262,000 2,762,000 129,000 1,213,000 756,000 566,000 485,000 546,000 281,000 333,000 229,000 212,000 202,000 198,000 387,809 191 37,000 379,827 -79,827 80,000 88,000 
          income from equity method investments
        -1,749,000 -3,895,000    -322,000    -6,224,000                         
          unrealized loss on short-term investments
        1,406,000 2,849,000 -18,656,000 -2,730,000 1,082,000 -2,124,000 -413,000 -1,031,000 2,595,000 -1,691,000                         
          inventory provision
        5,112,000 5,632,000 4,228,000 1,102,000 4,523,000 -1,062,000 849,000 1,984,000 1,025,000 -4,456,000                         
          provision for (reversal of) credit losses
        2,234,000                                  
          deferred income taxes
        -503,000 -2,662,000 -4,262,000 -5,790,000 -1,661,000 -1,683,000 7,689,000 409,000 -1,129,000 -3,711,000 -5,225,000 1,583,000 -6,294,000 -1,009,000 1,313,000 5,804,000 -2,081,000 2,826,000 -1,164,000 -573,000 -2,929,000 547,000 -4,125,000 -542,000 35,000 -2,962,000 -756,000       168,000 
          stock-based compensation
        5,621,000 6,428,000 7,562,000 9,770,000 9,817,000 8,784,000 11,881,000 14,342,000 14,569,000 12,672,000 10,581,000 2,017,000 2,068,000 2,494,000 3,267,000 595,000 1,374,000 1,294,000 1,278,000 1,335,000 1,210,000 1,305,000 2,779,000 855,000 689,000 653,000 1,557,000 1,361,256 744 592,000 2,770,998 -2,174,998 2,175,000 -70,000 
          dividends from unconsolidated affiliates
        518,000 2,036,000    798,000 131,000 600,000                          
          others
         217,000 6,000 47,000 1,039,000                              
          net changes in operating assets and liabilities:
                                          
          accounts receivable
        -8,323,000 -24,778,000 -46,841,000 -44,698,000 190,000 -33,886,000 -74,549,000 444,000 -15,286,000 -32,506,000 -47,613,000 -26,178,000 -2,452,000 8,185,000 -41,205,000 -55,351,000 -284,000 -19,489,000 -13,856,000 -9,677,000 -4,602,000 5,490,000 899,000 -21,572,000 -6,902,000 12,673,000 -12,797,000 -6,837,099 99 6,409,000 -5,519,142 -20,858 14,000 -10,723,000 
          other receivables
        -406,000 4,294,000 -5,193,000 -7,974,000 7,126,000 12,717,000 -4,843,000 -106,000 -11,580,000 -2,650,000 6,689,000 -2,829,000 -5,423,000 -6,022,000 -5,526,000 9,110,000 -4,893,000 -5,193,000 -2,617,000 1,240,000 -1,850,000 -3,370,000 -241,000 -2,588,000 -683,000 -296,000 37,000 1,149,331 669 -1,952,000 779,876 -1,329,876 1,331,000 502,000 
          inventories
        -29,545,000 -27,529,000 -27,743,000 -37,838,000 -15,108,000 18,066,000 -17,312,000 -26,315,000 -38,574,000 -28,139,000 -39,149,000 -16,797,000 -79,942,000 -61,277,000 -103,678,000                    
          advances to related parties
        1,630,000 -1,573,000 -245,000                                
          prepaid expenses and other current assets
        -2,538,000 4,684,000 -838,000 -3,297,000 -3,136,000                              
          other long-term assets
        23,000 -58,000            3,135,000 -178,000 1,148,000 -119,000 -774,000 -808,000 -2,960,000 21,000 740,000 -3,000 -872,000 36,000 31,000 41,000        
          related parties accounts payable
        -268,000 8,737,000 3,496,000                                
          accounts payable
        -14,250,000 30,500,000 29,611,000 31,115,000 -23,372,000 -25,622,000 24,662,000 7,953,000 -5,553,000 3,262,000 29,118,000 -3,287,000 13,250,000 7,346,000 11,808,000 -8,334,000 6,681,000 7,928,000 26,083,000 21,708,000 9,492,000 -748,000 7,069,000 9,337,000 5,617,000 -2,641,000 -2,017,000 1,603,757 -3,757 4,660,000 5,154,514 2,374,486 -2,364,000 -1,337,000 
          advances from customers
        -20,620,000 -17,590,000 -18,897,000 -21,553,000 -2,804,000 34,272,000 6,445,000 24,151,000 2,182,000 -12,366,000 -4,271,000 20,754,000 25,857,000 15,370,000 74,092,000 -14,477,000 29,273,000 -48,000 8,967,000 10,980,000 14,932,000 9,720,000 -859,000 -478,000 195,000 -41,000 3,449,000 -2,703,045 45 4,498,000 3,816,201 -85,201 87,000 53,000 
          deferred revenue
        -6,434,000 1,839,000 1,889,000 2,880,000 2,243,000 -1,601,000 4,859,000 -3,300,000 4,892,000 -1,060,000 -303,000 649,000 3,407,000 -737,000 1,480,000 -2,448,000 2,699,000 777,000 55,000 1,033,000 1,315,000 524,000 345,000            
          income taxes payable
        1,385,000 838,000 -349,000 -5,955,000 -6,630,000 6,059,000 -4,390,000 -254,000 5,009,000 -4,730,000 -890,000 1,946,000 6,683,000 -5,101,000                     
          fin-48 payable
        589,000 5,952,000 394,000 1,891,000 17,000 10,475,000 -3,103,000 -37,000 -19,000 5,662,000 41,000 -328,000 88,000 4,632,000 -107,000 -131,000 10,000                  
          other payables and accrued expenses
        5,149,000 9,416,000 17,377,000 -2,095,000 2,431,000 8,161,000 8,218,000 6,017,000 807,000 14,447,000 -3,076,000 8,677,000 1,327,000 9,651,000 8,167,000 4,314,000 1,274,000 4,613,000 3,668,000 -911,000 3,181,000 -726,000 2,425,000 1,758,000 1,779,000 513,000 -101,000 2,451,987 1,013 2,296,000 2,657,368 -26,368 27,000 690,000 
          operating lease liabilities
        -1,252,000 -1,252,000 -1,269,000 -974,000 -1,053,000 -666,000 -844,000 -1,031,000 -973,000                          
          other long-term liabilities
        -200,000 3,643,000 -205,000 -321,000 -369,000 3,532,000 180,000 36,000 -404,000 4,365,000 -3,834,000 -3,893,000 1,730,000 1,530,000 -2,274,000 -1,773,000 155,000 3,708,000 161,000 -1,694,000 -1,865,000 1,386,000 -289,000 746,000 1,715,000 1,117,000 -829,000 -610,627 -1,373 -660,000 -679,729 277,729 -278,000 -573,000 
          net cash from operating activities
        -29,538,000 33,919,000 -4,625,000 -44,901,000 5,282,000 88,595,000 11,913,000 61,591,000 -9,649,000          -4,063,000 -10,501,000 10,742,000   -14,480,000 3,829,000 14,155,000 -145,000 -4,603,818 -3,182 9,642,000 -2,728,882 7,388,882 -7,393,000 -3,440,000 
          capital expenditures
        -9,018,000 -13,810,000 -11,015,000 -14,732,000 -16,726,000 -32,535,000 -13,093,000 -25,419,000          -2,706,000 -887,000 -1,466,000   -1,411,000 -118,000 -139,000 -507,000 -324,885 -115 -232,000 -1,597,118 394,118 -395,000 -502,000 
          free cash flows
        -38,556,000 20,109,000 -15,640,000 -59,633,000 -11,444,000 88,595,000 -20,622,000 48,498,000 -35,068,000          -6,769,000 -11,388,000 9,276,000   -15,891,000 3,711,000 14,016,000 -652,000 -4,928,703 -3,297 9,410,000 -4,326,000 7,783,000 -7,788,000 -3,942,000 
          cash flows from investing activities:
                                          
          purchase of property and equipment
        -22,201,000 -13,810,000 -11,015,000 -14,732,000 -16,726,000  -32,535,000 -13,093,000 -25,419,000 -12,341,000 -27,902,000 -6,738,000 -14,895,000 -72,677,000   -3,176,000 -4,094,000 -2,706,000 -887,000 -1,466,000 -1,628,000 -2,054,000 -1,411,000 -118,000 -139,000 -507,000 -324,885 -115 -232,000 -1,597,118 394,118 -395,000 -502,000 
          purchase of intangible assets
        -235,000 -592,000 4,000 -409,000 -375,000 -1,501,000 -832,000 -484,000 -668,000 -851,000 -326,000 -1,130,000 -155,000 -347,000 -1,034,000 363,000 -408,000 -141,000 13,000 -319,000 -112,000 -243,000 -26,000   -40,000 -43,000 -70,999 -1 109,000 -349,843   -78,000 
          purchase of time deposits
         -352,290,000 -10,000,000 -17,000,000 -10,000,000 -5,920,000 -10,720,000 -12,820,000 -45,270,000 -3,190,000                         
          proceeds from redemption and maturity of time deposits
        13,005,000 17,000,000 10,000,000 17,000,000 10,261,000                              
          purchase of long-term investments
        -361,000 -6,000    -17,507,000 -1,378,000 -5,988,000 -1,020,000                         
          net cash from investing activities
        -9,792,000 -347,551,000 -11,489,000 -14,455,000 -16,840,000 -20,531,000 -23,317,000 19,598,000 12,291,000 -4,604,000 -48,782,000 -2,488,000 49,129,000 -108,890,000 -162,900,000 162,479,000 -156,359,000 -5,803,000 -2,693,000 -1,206,000 -1,578,000 -35,297,000 -3,501,000 -31,034,000 -118,000 -237,000 -4,789,000 -504,884 -116 -123,000 -1,946,961 393,961 -395,000 -15,234,000 
          cash flows from financing activities:
                                          
          proceeds from short-term borrowings
        36,125,000 28,076,000 14,377,000 28,017,000 17,056,000 481,000 8,848,000 406,000 23,530,000 2,020,000    5,316,000    4,896,000 335,000 13,442,000 4,211,000 1,505,000 5,261,000 23,126,000 2,681,000 156,000 3,244,000 15,014,715 8,285 4,661,000 13,054,847 -7,376,847 7,387,000 3,001,000 
          repayments of short-term borrowings
        -17,340,000 316,000 -22,473,000 -214,000 -24,961,000 -1,559,000 -29,541,000 -910,000 -287,000 -5,338,000    4,470,000 -8,773,000   -10,821,000 -7,235,000 -15,009,000 -6,744,000 -3,353,000 -3,318,000 -1,148,000 -12,415,000 -2,235,000 -2,424,000 -9,340,916 -5,084 -5,169,000 -7,956,748 2,300,748 -2,306,000 -1,467,000 
          proceeds from long-term borrowings
        41,538,000 -512,000 30,166,000 36,784,000 52,701,000 15,203,000 49,416,000   14,500,000        117,000 5,391,000                
          repayments of long-term borrowings
        -24,706,000 -30,382,000 -14,625,000 -14,791,000 -455,000 -3,278,000 -3,102,000 -2,009,000 -1,193,000 -513,000 -659,000 585,000 -1,696,000 -515,000 -1,604,000 592,000 -696,000 -934,000 -399,000 -570,000 -224,000              
          capital contribution by non-controlling shareholder
         104,000 138,000                              
          gross proceeds from sales of acm shanghai's shares
        110,243,000                                  
          proceeds from exercise of stock options
        17,536,000 6,874,000 4,311,000 853,000 22,729,000 4,609,000 53,000 1,638,000 4,799,000 848,000 765,000 4,284,000 241,000 164,000 1,124,000                    
          net cash from financing activities
        163,396,000 4,372,000 627,142,000 43,765,000 67,208,000 15,456,000 18,774,000 31,402,000 26,849,000 11,517,000 3,599,000 4,869,000 -1,455,000 9,435,000 41,435,000 -5,027,000 28,000 539,071,000 -976,000 2,051,000 -1,380,000 18,276,000 3,261,000 20,856,000 -9,559,000 28,270,000 53,326,000 5,845,739 3,261 -491,000 5,608,804   18,714,000 
          effect of exchange rate changes on cash, cash equivalents and restricted cash
        4,106,000 7,883,000 3,425,000 651,000 866,000 -7,464,000 2,972,000 208,000 -551,000 1,805,000 12,719,000 -11,480,000 -4,784,000 9,928,000 -19,031,000   1,034,000 2,559,000 1,069,000 -754,000 2,095,000 3,431,000 46,000 -1,002,000 1,825,000         
          net increase in cash, cash equivalents and restricted cash
        128,172,000 -301,377,000 614,453,000 -14,940,000 56,516,000 76,056,000 10,342,000 112,799,000 28,940,000            7,030,000 -20,437,000 5,806,000 -24,612,000 -6,850,000 44,013,000         
          cash, cash equivalents and restricted cash at beginning of period
        765,963,000  411,310,000 183,173,000 248,451,000 182,756,000   71,766,000 117,859,000         
          cash, cash equivalents and restricted cash at end of period
        894,135,000  614,453,000 -14,940,000 467,826,000 76,056,000 10,342,000 112,799,000 212,113,000 -24,488,000 -50,341,000 -2,845,000 260,847,000 -88,191,000 12,298,000   498,031,000 -5,173,000 -8,587,000 78,796,000 -20,437,000 5,806,000 -24,612,000 111,009,000 44,013,000         
          supplemental disclosure of cash flow information:
                                          
          interest paid
        1,933,000                     371,000 272,000 228,000 111,000 207,000 205,000 332,861 139 134,000 363,748 -102,748 103,000 81,000 
          cash paid for income taxes
        2,062,000 2,424,000 6,552,000 12,598,000 10,801,000 1,417,000 690,000   9,629,000 9,231,000 4,369,000 2,874,000 3,404,000 63,000   526,000 143,000 400,000 63,000 365,000 502,000            
          reconciliation of cash, cash equivalents and restricted cash:
                                          
          cash and cash equivalents
        872,269,000 -301,536,000 616,821,000 -15,152,000 457,240,000 73,973,000 9,441,000 112,726,000 211,305,000 -25,011,000 -50,319,000 -2,967,000 260,387,000 -88,324,000    498,031,000 -5,173,000 -8,587,000 78,796,000 -20,437,000 5,806,000 34,114,000 52,283,000 10,997,000         
          restricted cash
        21,866,000 159,000 -2,368,000 212,000 10,586,000 2,083,000 901,000 73,000 808,000 523,000 -22,000 122,000 460,000 133,000           58,726,000 33,016,000         
          cash, cash equivalents and restricted cash
        894,135,000 -301,377,000 614,453,000 -14,940,000 467,826,000 76,056,000 10,342,000 112,799,000 212,113,000 -24,488,000 -50,341,000 -2,845,000 260,847,000 -88,191,000    498,031,000 -5,173,000 -8,587,000 78,796,000 -20,437,000 5,806,000 -24,612,000 111,009,000 44,013,000         
          non-cash financing activities:
                                          
          cashless exercise of stock options
         16,000 19,000 160,000 166,000 55,000 122,000 140,000 122,000 132,000 32,000 47,000 96,000 96,000 -10,000 39,000 19,000 35,000 83,000              
          non-cash investing activities:
                                          
          transfer of prepayment for property to property, plant and equipment
        47,000    9,000                              
          transfer from other non-current assets to long-term investment
            16,737,000                              
          purchases of property, plant and equipment through other payable and accrued expenses
        13,183,000                                  
          realized gain on short-term investments
             -1,344,000 -171,000 -273,000 -478,000                         
          provision for credit losses
         5,017,000 8,046,000   7,721,000 3,842,000 783,000 1,171,000 1,099,000                         
          purchase of short-term investments
             12,000 6,000 -1,409,000                          
          refund of deposit for land use right
                                        
          proceeds from sale of short-term investments
             5,267,000                             
          proceeds from disposal of long-term investments
                                          
          repurchase of acm shanghai's shares
                                        
          acm shanghai dividends
                                        
          proceeds from issuance of acm shanghai’s shares, net of issuance costs
                                          
          cash, cash equivalents and restricted cash at beginning of year
                                          
          cash, cash equivalents and restricted cash at end of year
                                          
          reconciliation of cash, cash equivalents and restricted cash in consolidated statements of cash flows:
                                          
          prepayment for purchase of long-term investment
                                          
          purchase of intangible assets included in other long-term assets
                                          
          transfer of prepayment for property to property, plant, and equipment
         2,000 10,000    94,000 170,000 5,320,000                          
          transfer from inventories to property, plant and equipment
         3,283,000                                
          transfer from other non-current assets to long term investment
                                        
          transfer from property, plant and equipment to inventory
                                          
          purchase of long-term investments through other payable and accrued expenses
                                          
          adjustments to reconcile net income to net cash from operating activities
                                          
          acm shanghai dividend
                                          
          net proceeds from issuance of shares by acm shanghai
                                          
          interest paid, net of capitalized interest
          1,851,000 1,757,000 1,558,000 1,228,000 1,208,000 932,000 783,000 697,000 640,000 649,000 695,000 669,000 680,000 45,000 261,000 191,000 191,000 194,000 189,000              
          purchases of property, plant and equipment through other payables and accrued expenses
                                          
          adjustments to reconcile net income from operations to net cash from operating activities
                                          
          loss from equity method investments
           -1,773,000 -952,000   695,000 520,000                          
          proceeds from sale of short-term investments included in other receivables
               3,167,000                          
          purchases of property, plant and equipment through other payable
                                          
          (reversal) provision for credit losses
            -9,000                              
          advances to related party
            -360,000 429,000 1,303,000 -1,418,000 1,094,000 -1,268,000 -9,000 1,151,000 1,016,000 1,836,000 -4,203,000                    
          related party accounts payable
            3,152,000 741,000 -2,620,000 1,769,000 4,836,000 3,723,000 -4,195,000 -6,475,000 3,886,000 7,879,000 -3,395,000                    
          purchase property, plant and equipment through other payable
            23,430,000                              
          gain on disposals of property, plant and equipment
                                         
          prepaid expenses
             2,301,000 8,446,000 1,305,000 -141,000 -1,887,000 1,561,000 -1,387,000 -3,362,000 2,692,000 -3,288,000 1,916,000 -5,015,000 -8,990,000 1,385,000 -2,918,000 -83,000 -147,000 -2,195,000 -1,165,000 -11,000 -406,000 -89,000 411,810 190 159,000 -1,651,215 1,789,215 -1,791,000 276,000 
          purchase of property, plant and equipment
                                          
          proceeds from maturity of time deposits
               47,967,000 90,445,000 8,129,000                         
          transfer from inventory to property, plant and equipment
                                         
          purchase property, plant and equipment through other payable and accrued expenses
                                          
          purchase long-term investments through other payable and accrued expenses
                                          
          adjustments to reconcile net income from operations to net cash generated from operating activities
                                          
          loss on disposals of property, plant and equipment
              1,064,000              26,000 24,000   -2,000 -3,000        
          purchase property, plant and equipment through accounts payable and other payable
                 6,362,000                         
          income tax recoverable
                                          
          proceeds from a subsidiary equity issuance, net of issuance costs
                                          
          proceeds from warrant exercise to common stock
                                        
          net cash flow used in operating activities
                  -17,877,000 6,254,000 -30,494,000                      
          purchase of equity investments
                                          
          proceeds from selling short-term investments
                                          
          dividend from long-term investments
                                          
          net decrease in cash, cash equivalents and restricted cash
                    12,396,000  -170,458,000                    
          reconciliation of cash, cash equivalents and restricted cash in condensed consolidated statements of cash flows:
                                          
          conversion of class b common stock to class a common stock
                                          
          realized gain on trading securities
                   -3,919,000 -3,994,000 20,000                     
          equity income in net income of affiliates
                   -3,920,000 32,000 -3,014,000 -1,180,000   -3,601,000 -421,000 -295,000 -320,000 -116,000 -182,000 -209,000 -148,000 92,000 9,000 -268,884 -116 112,000 -234,882    
          unrealized loss on trading securities
                   2,455,000 654,000   -3,435,000 3,858,000    1,047,000              
          bad debt expense
                   198,000 298,000                      
          purchase of long-term investment
                   -725,000 -728,000                      
          decrease of time deposits
                                          
          proceeds from selling trading securities
                   6,637,000 11,072,000 89,000                     
          increase of time deposits
                    53,835,000                      
          change in fair value of financial liability
                             6,533,000            
          purchase of land-use-right
                             -413,000             
          purchase of trading securities
                             -340,000             
          prepayment for property
                             -33,228,000             
          investments in affiliates
                                         
          repayments of notes payable
                                        
          warrant conversion to common stock
                             399,000          
          share cancellation
                                          
          issuance of warrant for settlement of financial liability and cancellation of note receivable
                                          
          unrealized gain on trading securities
                         1,210,000 919,000   -3,604,000             
          increase of short-term time deposits
                        -74,025,000                  
          increase of long-term time deposits
                        -78,750,000                  
          purchase of long term investment
                                          
          transfer of prepayment for property to property plant and equipment
                                          
          income tax payable
                       5,789,000 -1,999,000 -978,000 752,000 377,000 75,000 -3,526,000 1,808,000 -1,682,000 263,000 1,790,000 1,173,000 -1,011,015 15 504,000 644,813    
          net cash flow from operating activities
                       -5,839,000 -27,729,000                  
          decrease of short-term time deposits
                                          
          decrease of long-term time deposits
                                          
          equity loss in net loss of affiliates
                        71,000                  
          inventory
                        -52,503,000 -40,043,000 -40,181,000 -32,156,000 -15,276,000 -22,406,000 -12,732,000 -4,699,000 -931,000 -769,000 894,000 -6,780,241 -2,759 -8,926,000 -15,144,672 3,883,672 -3,896,000 2,860,000 
          proceeds from stock option exercise to common stock
                        724,000 301,000 932,000 820,000 1,377,000 554,000 1,318,000 698,000 175,000 5,000 140,000 171,940 60 17,000 510,705 -61,705 62,000 
          effect of exchange rate changes on cash and cash equivalents
                        1,304,000           -283,280 280  -375,715 -150,285 150,000 567,000 
          net increase in cash and cash equivalents
                        -182,756,000           453,757 243   2,494,754 -2,495,000 607,000 
          cash and cash equivalents at beginning of period
                        563,067,000           27,096,876 27,124   -17,663,319 17,681,000 
          cash and cash equivalents at end of period
                        380,311,000           27,550,633 27,367   -15,168,565 15,186,000 607,000 
          investments in unconsolidated affiliates
                                 -58,000 -4,239,000        
          proceeds from issuance of class a common stock in connection with public offering, net of direct issuance expenses of 2,287
                                 -29,000         
          payment for repurchase of class a common stock
                                 -2,042,000         
          payment for cancellation of stock option
                                         
          proceeds from issuance of common stock to redeemable non-controlling interest
                                 32,415,000         
          share cancellation,
                                          
          net (decrease) in cash, cash equivalents and restricted cash
                                          
          non-cash from financing activities:
                                          
          prepayment for land-use-right and property
                                          
          adjustments to reconcile net income from operations to net cash from operating activities:
                                          
          issuance of warrant for settlement of financial liability,
                                          
          share cancellation, note 12
                                          
          adjustments to reconcile net income from operations to net cash from
                                          
          operating activities:
                                          
          adjustments to reconcile net loss from operations to net cash from
                                          
          other current assets
                                     32,000 11,954 -2,954 3,000 844,000 
          adjustments to reconcile net loss from operations to net cash from operating activities
                                          
          loss on disposals of fixed assets, intangible assets and other long-term assets
                                          
          loan to related party
                                         
          purchase of non-controlling interest
                                         -14,654,000 
          investments in unconsolidated equity method affiliates
                                          
          proceeds from issuance of series e convertible preferred stock
                                          
          proceeds from issuance of common stock in connection with initial public offering and concurrent private placement
                                          
          payment of initial public offering expenses
                                          
          investment in affiliates
                                          
          proceeds from issuance of common stock for non-controlling interest purchase
                                          
          effect of exchange rate changes on cash and cash equivalent
                                          
          net increase in cash and cash equivalent
                                          
          preferred stock conversion to common stock in connection with initial public offering
                                          
          adjustments to reconcile net loss from operations to net cash from operating activities:
                                          
          proceeds from issuance of series f preferred stock
                                          
          proceeds from issuance of common stock
                                          
          net increase in cash, cash equivalents, and restricted cash
                                          
          cash, cash equivalents, and restricted cash at beginning of period
                                          
          net loss
                                        -2,780,000  
          undistributed earnings from investments in equity method affiliates
                                        -1,000 -17,000 
          net cash provided in financing activities
                                        5,143,000  
          net loss from debt conversion and interest waiver
                                          
          proceed from disposal of property and equipment
                                          
          investment in affiliates, equity method
                                          
          investors’ deposit
                                          
          proceeds from issuance of series f convertible preferred stock
                                          
          proceeds from issuance of common stock in connection with initial public offering and concurrent private placement, net of direct issuance expenses of 1,254
                                          
          debt conversion to class a common stock
                                          
          debt conversion to series f convertible preferred stock
                                          
          exercise of stock option in lieu of the cash repayment of notes payable
                                          
          proceed from issuance of series e convertible preferred stock
                                          
          investor deposits for series f convertible preferred stock
                                          
          income taxes paid