7Baggers

AXT, Inc
(NASDAQ:AXTI) 

AXTI stock logo

AXT, Inc. designs, develops, manufactures, and distributes compound and single element semiconductor substrates. It produces semiconductor substrates using its proprietary vertical gradient freeze technology. The company offers indium phosphide for use in data center connectivity using light/lasers,...

Founded: 1986
Full Time Employees: 988
CEO: Morris Young  
Sector: Technology
Industry: Semiconductor Equipment & Materials

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Quarterly
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    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 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-09-30 2009-06-30 2009-03-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2004-09-30 2004-06-30 2004-03-31 2003-12-31 2003-09-30 2003-06-30 2003-03-31 2002-12-31 2002-09-30 2002-06-30 2001-09-30 
                                                                                                  
      revenue
    26,924,000 23,041,000 27,955,000 17,974,000 19,356,000 25,105,000 23,645,000 27,923,000 22,688,000 20,429,000 17,366,000 18,595,000 19,405,000 26,795,000 35,183,000 39,487,000 39,653,000 37,732,000 34,576,000 33,735,000 31,350,000 27,035,000 25,469,000 22,134,000 20,723,000 18,410,000 19,841,000 24,797,000 20,208,000 22,232,000 28,626,000 27,120,000 24,419,000 26,332,000 28,168,000 23,557,000 20,616,000 20,269,000 21,872,000 20,495,000 18,713,000 18,057,000 18,371,000 21,010,000 20,064,000 23,138,000 21,449,000 19,345,000 18,603,000 20,521,000 23,831,000 22,380,000 18,927,000 20,808,000 25,153,000 23,486,000 21,219,000 28,305,000 30,031,000 24,566,000 26,866,000 26,809,000 23,177,000 18,641,000 16,819,000 13,055,000 7,654,000 17,863,000 19,932,000 19,634,000 10,159,750 14,474,000 13,639,000 12,526,000 13,072,000 12,547,000 10,355,000 8,471,000 7,717,000 6,153,000 6,032,000 6,634,000 7,623,000 8,531,000 9,524,000 9,776,000 9,130,000 8,529,000 8,519,000 12,657,000 12,256,000 14,948,000 19,194,000 22,783,000 
      yoy
    39.10% -8.22% 18.23% -35.63% -14.69% 22.89% 36.16% 50.16% 16.92% -23.76% -50.64% -52.91% -51.06% -28.99% 1.76% 17.05% 26.48% 39.57% 35.76% 52.41% 51.28% 46.85% 28.37% -10.74% 2.55% -17.19% -30.69% -8.57% -17.24% -15.57% 1.63% 15.13% 18.45% 29.91% 28.79% 14.94% 10.17% 12.25% 19.06% -2.45% -6.73% -21.96% -14.35% 8.61% 7.85% 12.75% -10.00% -13.56% -1.71% -1.38% -5.26% -4.71% -10.80% -26.49% -16.24% -4.40% -21.02% 5.58% 29.57% 31.78% 59.74% 105.35% 202.81% 4.36% -15.62% -33.51% -24.66% 23.41% 46.14% 56.75% -22.28% 15.36% 31.71% 47.87% 69.39% 103.92% 71.67% 27.69% 1.23% -27.87% -36.67% -32.14% -16.51% 0.02% 11.80% -22.76% -25.51% -42.94% -55.62% -44.45%     
      qoq
    16.85% -17.58% 55.53% -7.14% -22.90% 6.17% -15.32% 23.07% 11.06% 17.64% -6.61% -4.17% -27.58% -23.84% -10.90% -0.42% 5.09% 9.13% 2.49% 7.61% 15.96% 6.15% 15.07% 6.81% 12.56% -7.21% -19.99% 22.71% -9.10% -22.34% 5.55% 11.06% -7.26% -6.52% 19.57% 14.27% 1.71% -7.33% 6.72% 9.52% 3.63% -1.71% -12.56% 4.71% -13.29% 7.87% 10.88% 3.99% -9.35% -13.89% 6.48% 18.24% -9.04% -17.27% 7.10% 10.68% -25.03% -5.75% 22.25% -8.56% 0.21% 15.67% 24.33% 10.83% 28.83% 70.56% -57.15% -10.38% 1.52% 93.25% -29.81% 6.12% 8.89% -4.18% 4.18% 21.17% 22.24% 9.77% 25.42% 2.01% -9.07% -12.97% -10.64% -10.43% -2.58% 7.08% 7.05% 0.12% -32.69% 3.27% -18.01% -22.12% -15.75%  
      cost of revenue
    18,946,000 18,215,000 21,731,000 16,541,000 20,597,000 20,697,000 17,963,000 20,271,000 16,594,000 15,802,000 15,500,000 16,880,000 14,295,000 18,199,000 20,401,000 24,052,000 26,345,000 25,593,000 23,075,000 21,497,000 19,814,000 17,873,000 16,646,000 15,366,000 15,201,000 14,545,000 14,082,000 16,291,000 13,513,000 16,382,000 18,012,000 16,110,000 14,846,000 16,534,000 17,035,000 16,301,000 14,328,000 12,746,000 14,294,000 14,468,000 13,460,000 14,967,000 13,766,000 16,625,000 15,315,000 17,820,000 17,289,000 16,627,000 15,790,000 18,075,000 20,746,000 18,896,000 15,243,000 15,342,000 17,645,000 15,292,000 13,360,000 16,068,000 16,005,000 13,906,000 16,169,000 16,278,000 14,642,000 11,909,000 11,281,000 10,539,000 7,891,000 13,326,000 13,488,000 13,413,000 6,418,000 9,944,000 8,607,000 7,121,000 8,084,000 9,068,000 7,596,000 6,961,000 7,069,000 5,008,000 5,905,000 6,355,000 7,000,000 10,767,000 8,695,000 9,243,000 8,343,000 8,029,000 7,844,000 12,938,000 22,790,000 18,491,000 16,266,000 17,423,000 
      gross profit
    7,978,000 4,826,000 6,224,000 1,433,000 -1,241,000 4,408,000 5,682,000 7,652,000 6,094,000 4,627,000 1,866,000 1,715,000 5,110,000 8,596,000 14,782,000 15,435,000 13,308,000 12,139,000 11,501,000 12,238,000 11,536,000 9,162,000 8,823,000 6,768,000 5,522,000 3,865,000 5,759,000 8,506,000 6,695,000 5,850,000 10,614,000 11,010,000 9,573,000 9,798,000 11,133,000 7,256,000 6,288,000 7,523,000 7,578,000 6,027,000 5,253,000 3,090,000 4,605,000 4,385,000 4,749,000 5,318,000 4,160,000 2,718,000 2,813,000 2,446,000 3,085,000 3,484,000 3,684,000 5,466,000 7,508,000 8,194,000 7,859,000 12,237,000 14,026,000 10,660,000 10,697,000 10,531,000 8,535,000 6,732,000 5,538,000 2,516,000  4,537,000 6,444,000 6,221,000 3,741,750 4,530,000 5,032,000 5,405,000 4,988,000 3,479,000 2,759,000 1,510,000 648,000 1,145,000 127,000 279,000   829,000 533,000 787,000 500,000 675,000 -281,000 -10,534,000 -3,543,000 2,928,000 5,360,000 
      yoy
    -742.87% 9.48% 9.54% -81.27% -120.36% -4.73% 204.50% 346.18% 19.26% -46.17% -87.38% -88.89% -61.60% -29.19% 28.53% 26.12% 15.36% 32.49% 30.35% 80.82% 108.91% 137.05% 53.20% -20.43% -17.52% -33.93% -45.74% -22.74% -30.06% -40.29% -4.66% 51.74% 52.24% 30.24% 46.91% 20.39% 19.70% 143.46% 64.56% 37.45% 10.61% -41.90% 10.70% 61.33% 68.82% 117.42% 34.85% -21.99% -23.64% -55.25% -58.91% -57.48% -53.12% -55.33% -46.47% -23.13% -26.53% 16.20% 64.34% 58.35% 93.16% 318.56%  48.38% -14.06% -59.56%  0.15% 28.06% 15.10% -24.98% 30.21% 82.38% 257.95% 669.75% 203.84% 2072.44% 441.22%   -84.68% -47.65%   22.81% -289.68% -107.47% -114.11% -76.95% -105.24%     
      qoq
    65.31% -22.46% 334.33% -215.47% -128.15% -22.42% -25.74% 25.57% 31.71% 147.96% 8.80% -66.44% -40.55% -41.85% -4.23% 15.98% 9.63% 5.55% -6.02% 6.09% 25.91% 3.84% 30.36% 22.56% 42.87% -32.89% -32.29% 27.05% 14.44% -44.88% -3.60% 15.01% -2.30% -11.99% 53.43% 15.39% -16.42% -0.73% 25.73% 14.73% 70.00% -32.90% 5.02% -7.66% -10.70% 27.84% 53.05% -3.38% 15.00% -20.71% -11.45% -5.43% -32.60% -27.20% -8.37% 4.26% -35.78% -12.75% 31.58% -0.35% 1.58% 23.39% 26.78% 21.56% 120.11%   -29.59% 3.58% 66.26% -17.40% -9.98% -6.90% 8.36% 43.37% 26.10% 82.72% 133.02% -43.41% 801.57% -54.48%    55.53% -32.27% 57.40% -25.93% -340.21% -97.33% 197.32% -221.00% -45.37%  
      gross margin %
    29.63% 20.95% 22.26% 7.97% -6.41% 17.56% 24.03% 27.40% 26.86% 22.65% 10.75% 9.22% 26.33% 32.08% 42.01% 39.09% 33.56% 32.17% 33.26% 36.28% 36.80% 33.89% 34.64% 30.58% 26.65% 20.99% 29.03% 34.30% 33.13% 26.31% 37.08% 40.60% 39.20% 37.21% 39.52% 30.80% 30.50% 37.12% 34.65% 29.41% 28.07% 17.11% 25.07% 20.87% 23.67% 22.98% 19.39% 14.05% 15.12% 11.92% 12.95% 15.57% 19.46% 26.27% 29.85% 34.89% 37.04% 43.23% 46.71% 43.39% 39.82% 39.28% 36.83% 36.11% 32.93% 19.27% 0% 25.40% 32.33% 31.68% 36.83% 31.30% 36.89% 43.15% 38.16% 27.73% 26.64% 17.83% 8.40% 18.61% 2.11% 4.21% 0% 0% 8.70% 5.45% 8.62% 5.86% 7.92% -2.22% -85.95% -23.70% 15.25% 23.53% 
      operating expenses:
                                                                                                  
      selling, general and administrative
    6,551,000 6,266,000 6,334,000 5,653,000 5,916,000 6,440,000 5,650,000 5,779,000 6,227,000 5,367,000 5,667,000 5,820,000 5,952,000 5,935,000 6,576,000 6,693,000 6,450,000 6,348,000 6,476,000 5,795,000 5,570,000 5,081,000 4,623,000 4,747,000 4,749,000 5,058,000 4,755,000 4,769,000 4,723,000 5,179,000 4,615,000 4,987,000 4,222,000 4,790,000 4,484,000 3,942,000 3,793,000       3,775,000 5,251,000 3,505,000 3,688,000 3,436,000 3,108,750 4,303,000 4,207,000 3,925,000 2,927,250 3,950,000 3,974,000 3,785,000 2,739,750 3,555,000 3,714,000 3,690,000 2,451,250 3,347,000 3,039,000 3,419,000 3,323,000 3,486,000 4,006,000 4,901,000 3,578,000 3,667,000 2,632,250 3,083,000 3,743,000 3,703,000 2,926,000 2,641,000 3,853,000 3,230,000 3,089,000 2,898,000 2,716,000 4,252,000 3,120,000 2,468,000 3,203,000 2,770,000 2,502,000 2,654,000 2,819,000 3,286,000 3,795,000 4,993,000 4,658,000 5,826,000 
      research and development
    3,012,000 2,393,000 1,013,000 2,525,000 3,118,000 4,133,000 3,438,000 3,758,000 3,214,000 2,820,000 2,926,000 2,740,000 3,595,000 3,662,000 3,639,000 3,453,000 3,159,000 2,757,000 2,629,000 2,537,000 2,405,000 2,162,000 2,023,000 1,543,000 1,407,000 1,607,000 1,482,000 1,399,000 1,346,000 1,309,000 1,668,000 1,500,000 1,420,000 1,274,000 1,410,000 1,019,000 1,124,000 1,431,000 1,566,000 1,472,000 1,381,000 1,377,000 1,657,000 1,389,000 1,241,000 1,160,000 987,000 775,000 797,000 766,000 1,039,000 822,000 875,000 844,000 914,000 835,000 657,000 612,000 699,000 505,000 911,000 462,000 515,000 451,000 360,000 355,000 460,000 562,000 569,000 504,000 297,500 382,000 348,000 460,000 854,000 392,000 571,000 534,000 466,000 472,000 423,000 362,000 391,000 397,000 350,000 341,000 289,000 301,000 368,000 744,000 1,112,000 1,308,000 1,095,000 1,701,000 
      total operating expenses
    9,563,000 8,659,000 7,347,000 8,178,000 9,034,000 10,573,000 9,088,000 9,537,000 9,441,000 8,187,000 8,593,000 8,560,000 9,547,000 9,597,000 10,215,000 10,146,000 9,609,000 9,105,000 9,105,000 8,332,000 7,975,000 7,243,000 6,646,000 6,290,000 6,156,000 6,665,000 6,237,000 6,168,000 6,069,000 6,488,000 6,283,000 6,487,000 5,642,000 6,064,000 5,894,000 4,961,000 4,917,000 5,205,000 4,879,000 5,117,000 4,755,000 4,756,000 5,316,000 5,164,000 6,492,000 4,665,000 4,675,000 5,118,000 4,428,000 5,069,000 5,246,000 4,747,000 4,585,000 4,794,000 4,888,000 4,620,000 4,534,000 4,167,000 4,413,000 4,195,000 5,078,000 3,809,000 3,554,000 3,870,000 3,683,000 3,841,000 4,973,000 5,463,000 4,147,000 4,254,000 2,809,500 3,465,000 3,610,000 4,163,000 3,780,000 4,450,000 4,424,000 3,762,000 4,015,000 3,384,000 3,376,000 4,739,000 3,584,000 3,233,000 4,630,000 3,111,000         
      income from operations
    -1,585,000 -3,833,000 -1,123,000 -6,745,000 -10,275,000 -6,165,000 -3,406,000 -1,885,000 -3,347,000 -3,560,000 -6,727,000 -6,845,000 -4,437,000 -1,001,000 4,567,000 5,289,000 3,699,000 3,034,000 2,396,000 3,906,000 3,561,000 1,919,000 2,177,000 478,000 -634,000 -2,800,000 -478,000 2,338,000 626,000 -638,000 4,331,000 4,523,000 3,931,000 3,734,000 5,239,000 2,295,000 1,371,000 2,318,000 2,699,000 910,000 498,000 -1,666,000 -711,000 -779,000 -1,743,000 653,000 -515,000 -2,400,000 -1,615,000 -2,623,000 -2,161,000 -1,263,000 -901,000 672,000 2,620,000 3,574,000 3,325,000 8,070,000 9,613,000 6,465,000 5,619,000 6,722,000 4,981,000      2,297,000 1,967,000                -2,578,000 -2,004,000 -2,455,000 -2,512,000 -4,311,000 -15,441,000 -24,951,000 -26,804,000 -2,167,000 
      yoy
    -84.57% -37.83% -67.03% 257.82% 206.99% 73.17% -49.37% -72.46% -24.57% 255.64% -247.30% -229.42% -219.95% -132.99% 90.61% 35.41% 3.88% 58.10% 10.06% 717.15% -661.67% -168.54% -555.44% -79.56% -201.28% 338.87% -111.04% -48.31% -84.08% -117.09% -17.33% 97.08% 186.73% 61.09% 94.11% 152.20% 175.30% -239.14% -479.61% -216.82% -128.57% -355.13% 38.06% -67.54% 7.93% -124.90% -76.17% 90.02% 79.25% -490.33% -182.48% -135.34% -127.10% -91.67% -72.75% -44.72% -40.83% 20.05% 92.99%                           -40.20% -87.02% -90.16% -90.63% 98.94%     
      qoq
    -58.65% 241.32% -83.35% -34.36% 66.67% 81.00% 80.69% -43.68% -5.98% -47.08% -1.72% 54.27% 343.26% -121.92% -13.65% 42.98% 21.92% 26.63% -38.66% 9.69% 85.57% -11.85% 355.44% -175.39% -77.36% 485.77% -120.44% 273.48% -198.12% -114.73% -4.24% 15.06% 5.28% -28.73% 128.28% 67.40% -40.85% -14.12% 196.59% 82.73% -129.89% 134.32% -8.73% -55.31% -366.92% -226.80% -78.54% 48.61% -38.43% 21.38% 71.10% 40.18% -234.08% -74.35% -26.69% 7.49% -58.80% -16.05% 48.69% 15.06% -16.41% 34.95%       16.78%                 28.64% -18.37% -2.27% -41.73% -72.08% -38.11% -6.91% 1136.92%  
      operating margin %
    -5.89% -16.64% -4.02% -37.53% -53.08% -24.56% -14.40% -6.75% -14.75% -17.43% -38.74% -36.81% -22.87% -3.74% 12.98% 13.39% 9.33% 8.04% 6.93% 11.58% 11.36% 7.10% 8.55% 2.16% -3.06% -15.21% -2.41% 9.43% 3.10% -2.87% 15.13% 16.68% 16.10% 14.18% 18.60% 9.74% 6.65% 11.44% 12.34% 4.44% 2.66% -9.23% -3.87% -3.71% -8.69% 2.82% -2.40% -12.41% -8.68% -12.78% -9.07% -5.64% -4.76% 3.23% 10.42% 15.22% 15.67% 28.51% 32.01% 26.32% 20.91% 25.07% 21.49% 0% 0% 0% 0% 0% 11.52% 10.02% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% -26.37% -21.95% -28.78% -29.49% -34.06% -125.99% -166.92% -139.65% -9.51% 
      interest income
    101,000               -188,000    39,000  -41,000 -70,000 -39,000 -29,000 2,000 41,000 79,000 95,000 114,000 133,000 139,000 142,000 127,000 122,000 114,000 98,000 106,000 105,000 100,000 98,000 105,000 102,000 108,000 97,000 106,000 127,000 127,000 272,000 55,000 50,000 31,000 316,000 52,000 62,000 88,000 190,000 103,000 69,000 87,000 37,000 26,000  15,000 39,000 34,000 44,000 68,000 241,000 124,000 137,750 102,000 225,000 224,000 101,000 103,000 111,000 128,000 130,000 136,000 131,000 119,000             
      equity in income of unconsolidated joint ventures
    353,000    248,000 944,000 1,007,000 598,000 890,000 -460,000 369,000 941,000 1,034,000 649,000 2,006,000 2,177,000 1,125,000 735,000 1,061,000 1,502,000 1,111,000 354,000 45,000 -168,000                                                                       
      other income
    76,000 713,000 -166,000 23,000 354,000 -5,000 529,000 491,000 1,032,000 897,000 223,000 777,000 282,000 2,245,000 957,000 294,000  -389,000 948,000 61,000 -111,000 260,000 -34,000 1,608,000 1,366,000 1,002,000 169,000   531,000 87,000  -215,000 -150,000 -349,000 -102,000 48,000 178,000 164,000 328,000 190,000 268,000 496,000 626,000 633,000 -236,000 476,000 10,000 -257,000 -47,000 381,000  -1,075,000 492,000 157,000  253,000 356,000 450,000 -363,000 385,000 442,000 1,556,000 79,000 638,000 321,000  298,000  428,000        238,000        -167,000         
      income before provision for income taxes
    -1,055,000 -3,338,000 -1,169,000 -7,095,000 -9,942,000 -5,544,000 -2,261,000 -1,078,000 -1,774,000 -3,507,000 -6,516,000 -5,492,000 -3,518,000 1,492,000 7,231,000 7,572,000 4,632,000 3,222,000 4,361,000 5,508,000 4,511,000 2,492,000 2,118,000 1,879,000 583,000 -2,022,000 -472,000 2,335,000 -867,000 -1,052,000 4,557,000 4,918,000 3,524,000 3,404,000 4,746,000 2,119,000 584,000 2,044,000 2,387,000 938,000 330,000 -1,608,000 54,000 365,000 -813,000 913,000 713,000 -1,776,000 -1,322,000 -2,269,000 -1,259,000 -1,775,000 -379,000 1,216,000 2,839,000 3,327,000 3,768,000 8,529,000 10,132,000  6,041,000 7,190,000 6,512,000      1,372,000 2,519,000 960,250 1,011,000 1,375,000 1,455,000                 -16,829,750 -25,012,000  -2,172,000 
      provision for income taxes
    430,000 501,000 504,000 579,000 74,000 113,000 626,000 121,000 274,000 252,000 -101,000 -139,000 148,000 -3,000 501,000 1,027,000 660,000 -411,000 -135,000 893,000 746,000 108,000 637,000 920,000 366,000 -214,000 23,000 597,000 156,000 -173,000 410,000 367,000 334,000 131,000 181,000 321,000 159,000 20,000 176,000 140,000 397,000 197,000 7,000 241,000 86,000 43,000 152,000 59,000 -134,000 -204,000 -342,000 -184,000 294,000 -228,000 -412,000 -375,000 5,428,000 -667,000 -1,064,000  646,000 871,000   201,000 308,000 4,000 177,000 635,000    162,000    138,000                 -782,000 
      net income
    -1,485,000 -3,839,000 -1,673,000 -7,674,000 -10,016,000 -5,657,000 -2,887,000 -1,199,000 -2,048,000 -3,759,000 -6,415,000 -5,353,000 -3,666,000 1,495,000 6,730,000 6,545,000 3,972,000 3,633,000 4,496,000 4,615,000 3,765,000 2,384,000 1,481,000 959,000 217,000 -1,808,000 -495,000 1,738,000 -1,023,000 -879,000 4,147,000 4,551,000 3,190,000 3,273,000 4,565,000 1,798,000 425,000 2,024,000 2,211,000 798,000 -67,000 -1,805,000 47,000 124,000 -899,000 870,000 561,000 -1,835,000 -1,188,000 -2,065,000 -1,601,000 -1,959,000 -673,000 1,444,000 2,427,000 2,952,000 3,606,000 7,862,000 9,068,000 5,287,000 5,395,000 6,319,000 5,952,000 2,710,000 2,331,000   -1,014,000 737,000 1,959,000 853,750 858,000 1,213,000 1,344,000 3,384,000 639,000 -876,000 -2,203,000 -2,731,000 -2,082,000 -3,279,000 -4,123,000 -2,262,000 -4,964,000 -3,847,000 -2,560,000 -2,115,000 -2,563,000 -17,736,000 -4,317,000 -17,532,000 -28,673,000 -31,418,000 -1,390,000 
      yoy
    -85.17% -32.14% -42.05% 540.03% 389.06% 50.49% -55.00% -77.60% -44.14% -351.44% -195.32% -181.79% -192.30% -58.85% 49.69% 41.82% 5.50% 52.39% 203.58% 381.23% 1635.02% -231.86% -399.19% -44.82% -121.21% 105.69% -111.94% -61.81% -132.07% -126.86% -9.16% 153.11% 650.59% 61.71% 106.47% 125.31% -734.33% -212.13% 4604.26% 543.55% -92.55% -307.47% -91.62% -106.76% -24.33% -142.13% -135.04% -6.33% 76.52% -243.01% -165.97% -166.36% -118.66% -81.63% -73.24% -44.16% -33.16% 24.42% 52.35% 95.09% 131.45%   -367.26% 216.28%   -218.18% -39.24% 45.76% -74.77% 34.27% -238.47% -161.01% -223.91% -130.69% -73.28% -46.57% 20.73% -58.06% -14.76% 61.05% 6.95% 93.68% -78.31% -40.70% -87.94% -91.06% -43.55% 210.58%     
      qoq
    -61.32% 129.47% -78.20% -23.38% 77.05% 95.95% 140.78% -41.46% -45.52% -41.40% 19.84% 46.02% -345.22% -77.79% 2.83% 64.78% 9.33% -19.19% -2.58% 22.58% 57.93% 60.97% 54.43% 341.94% -112.00% 265.25% -128.48% -269.89% 16.38% -121.20% -8.88% 42.66% -2.54% -28.30% 153.89% 323.06% -79.00% -8.46% 177.07% -1291.04% -96.29% -3940.43% -62.10% -113.79% -203.33% 55.08% -130.57% 54.46% -42.47% 28.98% -18.27% 191.08% -146.61% -40.50% -17.78% -18.14% -54.13% -13.30% 71.52% -2.00% -14.62% 6.17% 119.63% 16.26%    -237.58% -62.38% 129.46% -0.50% -29.27% -9.75% -60.28% 429.58% -172.95% -60.24% -19.33% 31.17% -36.51% -20.47% 82.27% -54.43% 29.04% 50.27% 21.04% -17.48% -85.55% 310.84% -75.38% -38.86% -8.74% 2160.29%  
      net income margin %
    -5.52% -16.66% -5.98% -42.70% -51.75% -22.53% -12.21% -4.29% -9.03% -18.40% -36.94% -28.79% -18.89% 5.58% 19.13% 16.58% 10.02% 9.63% 13.00% 13.68% 12.01% 8.82% 5.81% 4.33% 1.05% -9.82% -2.49% 7.01% -5.06% -3.95% 14.49% 16.78% 13.06% 12.43% 16.21% 7.63% 2.06% 9.99% 10.11% 3.89% -0.36% -10.00% 0.26% 0.59% -4.48% 3.76% 2.62% -9.49% -6.39% -10.06% -6.72% -8.75% -3.56% 6.94% 9.65% 12.57% 16.99% 27.78% 30.20% 21.52% 20.08% 23.57% 25.68% 14.54% 13.86% 0% 0% -5.68% 3.70% 9.98% 8.40% 5.93% 8.89% 10.73% 25.89% 5.09% -8.46% -26.01% -35.39% -33.84% -54.36% -62.15% -29.67% -58.19% -40.39% -26.19% -23.17% -30.05% -208.19% -34.11% -143.05% -191.82% -163.69% -6.10% 
      less: net loss attributable to noncontrolling interests and redeemable noncontrolling interests
    -135,000 291,000 -233,000 666,000 1,218,000 569,000 -50,000 -317,000 -35,000 138,000 592,000 264,000 318,000                                                                                  
      net loss attributable to axt, inc.
    -1,620,000 -3,548,000 -1,906,000 -7,008,000 -8,798,000 -1,634,000 -2,937,000 -1,516,000 -2,083,000                -178,000                    -1,024,000   -2,040,000                                               
      net loss attributable to axt, inc. per common share:
                                                                                                  
      basic
    -30 -80 -40 -160 -200 -37.5 -70 -40 -50                                    -30   -60                                               
      diluted
    -30 -80 -40 -160 -200 -37.5 -70 -40 -50                                    -30   -60                                               
      weighted-average number of common shares outstanding:
                                                                                                  
      basic
    53,319,000 43,933,000 43,842,000 43,710,000 43,554,000 43,154,000 43,157,000 43,092,000 42,987,000 42,643,000 42,638,000 42,586,000 42,498,000 42,104,000 42,163,000 42,001,000 41,871,000 41,367,000 41,460,000 41,248,000 41,004,000 40,152,000 40,152,000 39,973,000  39,487,000 39,466,000 39,447,000 39,352,000 39,049,000 39,008,000 39,001,000 38,941,000 37,444,000 38,499,000 38,306,000 34,210,000 32,139,000 32,110,000 32,020,000 32,002,000 32,183,000 31,988,000 32,242,000 32,553,000 32,504,000 32,381,000 32,364,000 32,700,000 32,366,000 32,382,000 32,297,000  32,183,000 32,138,000 32,034,000  31,944,000 31,831,000 31,718,000 31,008,000 30,944,000 30,834,000    30,434,000                            
      diluted
    53,319,000 43,933,000 43,842,000 43,710,000 43,554,000 43,154,000 43,157,000 43,092,000 42,987,000 42,643,000 42,638,000 42,586,000 42,498,000 42,715,000 42,982,000 42,511,000 42,662,000 42,720,000 42,678,000 42,727,000 42,726,000 41,025,000 40,979,000 40,750,000  39,487,000 39,466,000 40,123,000 39,352,000 40,265,000 40,331,000 40,216,000 40,364,000 38,966,000 40,095,000 39,706,000 35,624,000 32,894,000 33,138,000 32,451,000 32,002,000 32,183,000 31,988,000 32,242,000 32,553,000 32,738,000 32,597,000 32,364,000 32,700,000 32,366,000 32,382,000 32,297,000  32,769,000 32,944,000 33,018,000  33,126,000 33,093,000 33,199,000 32,512,000 32,509,000 32,172,000    30,434,000                            
      interest expense
     -391,000 -395,000 -202,000 -269,000 -318,000 -391,000 -282,000 -349,000 -384,000 -381,000 -365,000 -397,000 -401,000 -299,000  -183,000 -13,750 -44,000  -50,000                                                              63,000 60,000 58,000 109,000 98,000 145,000 108,000 237,000 212,000 364,000 365,000 493,000 
      gain from equity method and fair value investments
     148,000 515,000 -171,000                                                                                           
      net income attributable to axt, inc.
             -3,621,000 -5,823,000 -5,089,000 -3,348,000 1,341,000 5,759,000 5,546,000 3,165,000 2,965,000 3,800,000 4,385,000 3,425,000 2,064,000 991,000 361,000  -2,049,000 -898,000 1,451,000 -1,104,000 -1,061,000 3,939,000 3,901,000 2,875,000 3,134,000 4,419,000 1,930,000 665,000 2,214,000 2,229,000 1,151,000 42,000 -246,250 42,000 -3,000  644,000 319,000  -1,682,500 -2,295,000 -2,035,000 -2,400,000 -756,000 932,000 1,299,000 1,635,000 2,566,000 6,484,000 7,062,000 4,208,000 3,438,500 5,639,000 5,535,000 2,580,000 2,121,000 -1,280,000 -5,516,000                            
      net income attributable to axt, inc. per common share:
                                                                                                  
      basic
             -80 -140 -120 -80 30 140 130 70 70 90 110 80 50 20 10  -50 -20 40 -30 -30 100 100 70 80 110 50 20 70 70 30  -7.5    20 10  -40 -70 -60 -80 -30 30 40 50 80 200 220 130 160 180 180 80 70 -40 -180                            
      diluted
             -80 -140 -120 -80 30 130 130 70 70 90 100 80 40 20 10  -50 -20 40 -30 -20 100 100 70 80 110 50 20 70 70 30  -7.5    20 10  -40 -70 -60 -80 -20 30 40 50 80 190 210 130 150 170 170 80 70 -40 -180                            
      less: net income attributable to noncontrolling interests and redeemable noncontrolling interests
                 -154,000 -971,000 -999,000 -807,000 -668,000 -696,000 -230,000 -340,000                                                                          
      ​
                                                                                                  
      other expense
                    -9,000           -90,000 -134,000   -51,000                    -825,000    -335,000                             113,000  258,750 -3,000 1,269,000  2,047,000 -303,000  -488,000 
      less: net income attributable to noncontrolling interests
                         -320,000 -490,000 -598,000 -395,000 -192,750 -403,000 -287,000 -81,000             -64,250  -127,000 -125,000       -441,000    -1,317,000                                       
      equity in loss of unconsolidated joint ventures
                            -120,000    -1,454,000    -334,000 -346,750 -266,000 -188,000 -933,000                                                          
      net loss attributable to axt, inc. per common share:
                                                                                                  
      basic and diluted
                            -10                                                                      
      weighted-average number of common shares outstanding:
                                                                                                  
      basic and diluted
                            39,812,000                                                                      
      equity in earnings of unconsolidated joint ventures
                             -412,500 -204,000 8,000  -5,250 6,000 307,000      -558,000 -581,000 -400,000 -456,000 -315,000 167,000 410,000 200,000 390,000 625,000 487,000 278,000 346,000 471,000 282,000                                           
      less: net loss attributable to noncontrolling interests
                                 -182,000 -208,000 -650,000 -315,000 -139,000 -146,000 132,000 240,000 190,000 18,000 353,000 109,000       -205,000                                               
      restructuring charge
                                           226,000        907,000                   507,000                308,750 158,000 1,077,000          
      selling, general, and administrative
                                         2,526,500 3,313,000 3,419,000 3,374,000 3,379,000 3,659,000                                                    
      less: net income attributable to noncontrolling interest
                                                 -226,000 -242,000  2,250,000 -230,000 -434,000  5,997,000 -512,000 -1,128,000  9,966,000 -1,378,000 -2,006,000 -1,079,000       76,000                            
      income before benefit from income taxes
                                                               6,189,000                                 -36,377,000  
      benefit from income taxes
                                                               -902,000                      35,000             
      income (loss) from operations
                                                                   2,862,000 1,855,000                              
      income (loss) before provision for income taxes
                                                                   2,956,000 2,532,000                              
      weighted average number of common shares outstanding:
                                                                                                  
      basic
                                                                   30,743,000 30,475,000 30,439,000                             
      diluted
                                                                   31,792,000 30,911,000 30,439,000                             
      impairment on assets held for sale
                                                                         83,000                         
      less: net loss attributable to noncontrolling interest
                                                                                                  
      impairment (recovery) on assets held for sale
                                                                                                  
      minority interests
                                                                                                  
      net income per share
                                                                                                  
      basic
                                                                       -0.03 0.02 0.06                         
      diluted
                                                                       -0.03 0.02 0.06                         
      shares used in computing net income per share:
                                                                                                  
      basic
                                                                       30,455 30,421 30,367                 54 22,857 22,702 22,628 -10 22,478 22,437 22,333 
      diluted
                                                                       30,455 31,562 31,585                 54 22,857 22,702 22,628 -10 22,478 22,437 22,333 
      provision for incomes taxes
                                                                         560,000    111,000    318,000 24,500 45,000 18,000  44,250 40,000 97,000 40,000         
      impairment (recovery of impairment) on assets held for sale
                                                                                                  
      restructuring benefit
                                                                                                  
      income from continuing operations
                                                                          932,250 1,065,000 1,422,000 1,242,000 926,000.11 635,000      -0.2            -1,390,000 
      other income (expense)
                                                                              423,250 641,000 814,000                  
      provision (benefit) for income taxes
                                                                          106,500 153,000                       
      discontinued operations:
                                                                                                  
      gain from discontinued operations, net of tax
                                                                              11,000 4,000 2,000 1,000   53,000              
      basic income (loss) per share:
                                                                                                  
      shares used in computing basic income per share
                                                                          7,485 30,150 29,943                      
      diluted income (loss) per share:
                                                                                                  
      shares used in computing diluted income per share
                                                                          7,821.75 31,464 31,142                      
      recovery of impairment on assets held for sale
                                                                                                  
      shares used in computing basic net income per share
                                                                             29,798 237 23,158                   
      shares used in computing diluted net income per share
                                                                             31,324 1,534 24,378                   
      impairment charge
                                                                               1,417,000                   
      loss from continuing operations
                                                                                -0.04 -0.1 -0.11 -0.1 -0.14  -0.13 -0.22 -0.18 -2,560,000 -2,244,000 -2,597,000 -3,889,000      
      loss from continuing operations before provision for income taxes
                                                                                                  
      provision (benefit)for income taxes
                                                                                                  
      gain from disposal, net of tax
                                                                                  167,500 259,000               
      restructuring
                                                                                                  
      basic and diluted loss per share:
                                                                                                  
      shares used in computing basic and diluted net loss per share
                                                                                23,052 22,986 -26 22,994 23,079              
      restructuring charges
                                                                                  94,000 14,000 237,000 125,000             
      gain on disposal, net of tax
                                                                                                  
      gain from discontinued operations
                                                                                  543,999.97 0.01  358,000 250,000  222,000  -3,910,000 34,000       
      asset impairment charge
                                                                                      52,500 210,000           
      weighted-average shares used for eps calculation
                                                                                     23,147             
      gain from disposal
                                                                                      56,250 225,000           
      basic and diluted shares used in per share calculations
                                                                                      5,761 23,094 23,045 22,995         
      loss from disposal
                                                                                                  
      loss before income tax
                                                                                         -2,520,000         
      loss from discontinued operations
                                                                                          -6,162,999.31  -13,847,000      
      property, plant and equipment impairment loss
                                                                                                23,979,000  
      loss before income tax benefit
                                                                                          -2,244,000 -2,597,000 -3,889,000      
      income tax provision
                                                                                                  
      gain on disposal
                                                                                          -2,368,750 1,625,000       
      income tax
                                                                                                  
      shares used in per share calculations:
                                                                                                  
      basic
                                                                       30,455 30,421 30,367                 54 22,857 22,702 22,628 -10 22,478 22,437 22,333 
      diluted
                                                                       30,455 31,562 31,585                 54 22,857 22,702 22,628 -10 22,478 22,437 22,333 
      loss on disposal
                                                                                            -11,100,000      
      basic loss per share:
                                                                                                  
      diluted loss per share:
                                                                                                  
      other (income)/expense
                                                                                             -231,000   9,208,000  
      income before income tax benefit
                                                                                             -4,317,000     
      income tax benefit
                                                                                                  
      basic loss per share
                                                                                             -0.19     
      diluted loss per share
                                                                                             -0.19     
      property, plant and equipment and goodwill impairment loss
                                                                                              9,771,500 15,107,000   
      provision expense for income taxes
                                                                                              -917,500 3,661,000   
      basic income per share
                                                                                              -0.71 -1.28 -1.4  
      diluted income per share
                                                                                              -0.71 -1.28 -1.4  
      benefit for income taxes
                                                                                                -4,959,000  
      loss from discontinued operations, net of tax benefits
                                                                                                  
      basic income per share:
                                                                                                  
      diluted income per share:
                                                                                                  
    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 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-09-30 2009-06-30 2009-03-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2004-09-30 2004-06-30 2004-03-31 2003-12-31 2003-09-30 2003-06-30 2003-03-31 2002-12-31 2002-09-30 2002-06-30 2001-09-30 
                                                                                                    
        assets
                                                                                                    
        current assets:
                                                                                                    
        cash and cash equivalents
      41,769,000 120,266,000 23,110,000 27,007,000 31,584,000 22,833,000    37,752,000 28,522,000 30,092,000 35,436,000 34,948,000 32,918,000 41,043,000 29,494,000 36,763,000 43,608,000 52,783,000 61,206,000 72,602,000 22,384,000 26,515,000 20,061,000 26,892,000 27,837,000 28,732,000 21,060,000 16,526,000 18,035,000 29,698,000 39,189,000 44,352,000 48,078,000 56,483,000 56,512,000 36,152,000 29,661,000 26,115,000 25,067,000 24,875,000 26,185,000 28,640,000 33,285,000 25,793,000 26,307,000 22,760,000 24,961,000 27,723,000 21,959,000 25,792,000 30,634,000 35,503,000 31,281,000 31,156,000 26,156,000 24,401,000 21,078,000 23,273,000 23,724,000 23,393,000 20,394,000 20,607,000 16,042,000 12,413,000 11,507,000 11,577,000 19,292,000 23,225,000  17,067,000 15,416,000 15,064,000 16,116,000 10,587,000 11,053,000 12,853,000 17,472,000 14,585,000 15,112,000 14,581,000 12,117,000 16,220,000 14,783,000 16,653,000 24,339,000    13,797,000    
        restricted cash
      16,100,000 8,100,000 8,100,000 8,100,000 6,600,000 10,978,000 13,893,000 13,789,000 13,807,000 12,362,000 10,778,000 10,794,000 9,457,000 6,400,000 3,900,000 3,900,000                                                                               
        short-term investments
      65,375,000       1,675,000 1,667,000 2,140,000 4,270,000 7,088,000 7,016,000 9,339,000 7,207,000 4,471,000 5,400,000 5,419,000 5,681,000 2,751,000 240,000 240,000 4,505,000 5,247,000 8,697,000 9,427,000 6,116,000 7,517,000 13,085,000 22,129,000 21,910,000 18,802,000 15,195,000 20,032,000 20,524,000 22,463,000 20,483,000 11,415,000 9,563,000 10,460,000 9,053,000 11,437,000 8,551,000 3,932,000 3,590,000 15,366,000 22,097,000 22,375,000 12,499,000 8,412,000 6,581,000 6,540,000 10,270,000 10,577,000 11,465,000 11,099,000 5,505,000 5,774,000 3,476,000 4,756,000 10,079,000 4,467,000 11,321,000 15,120,000 18,737,000 18,216,000 17,960,000 17,895,000 17,698,000 16,217,000  18,174,000 18,262,000 21,529,000 19,428,000 5,357,000   5,555,000  9,881,000 12,600,000 20,062,000 16,670,000 19,858,000 18,675,000 14,669,000    8,205,000    
        accounts receivable
      32,016,000 26,849,000 33,837,000 22,794,000 22,863,000 25,640,000 27,970,000 27,163,000 25,058,000 19,256,000 18,883,000 19,857,000 21,345,000 29,252,000 38,131,000 38,751,000 39,848,000 34,839,000 36,584,000 33,473,000 28,423,000 24,558,000 22,653,000 19,760,000 23,613,000 19,031,000 17,450,000 18,275,000 19,605,000 19,586,000 23,308,000 22,516,000 21,347,000 22,778,000 20,877,000 18,262,000 17,649,000 14,453,000 18,380,000 18,036,000 19,711,000 18,468,000 17,110,000 19,312,000 18,787,000 21,079,000 19,288,000 16,364,000 14,943,000 16,266,000 20,091,000 17,014,000 17,912,000 16,888,000 22,367,000 16,628,000 17,966,000 21,990,000 22,958,000 19,154,000 23,076,000 18,977,000 18,640,000 15,166,000 13,983,000 12,883,000 8,390,000 13,292,000 13,640,000 16,693,000  11,948,000 9,882,000 8,561,000 9,658,000 8,800,000 7,429,000 5,917,000 5,226,000 4,889,000 4,955,000 4,462,000 4,034,000 5,237,000 4,390,000 6,914,000 6,297,000    7,195,000    
        inventories
      90,168,000 81,651,000 77,656,000 80,063,000 80,409,000 85,077,000 86,109,000 85,774,000 85,943,000 86,503,000 86,383,000 87,063,000 91,678,000 89,629,000 88,496,000 77,280,000 68,821,000 65,912,000 60,683,000 58,926,000 54,681,000 51,515,000 48,357,000 49,586,000 48,253,000 49,152,000 49,071,000 50,326,000 53,025,000 58,571,000 58,717,000 57,038,000 51,122,000 45,840,000 40,768,000 40,627,000 39,195,000 40,152,000 38,731,000 38,625,000 38,822,000 38,012,000 38,087,000 38,901,000 39,475,000 36,648,000 35,263,000 38,040,000 39,127,000 38,376,000 36,836,000 38,768,000 40,352,000 39,932,000 40,869,000 42,028,000 46,012,000 44,335,000 39,653,000 39,747,000 35,986,000 33,153,000 27,247,000 28,141,000 28,642,000 28,304,000 33,497,000 39,150,000 38,887,000 29,077,000  25,124,000 24,953,000 24,389,000 20,263,000 17,359,000 16,192,000 15,802,000 16,156,000 15,600,000 15,336,000 15,984,000 16,462,000 18,005,000 21,822,000 22,894,000 24,083,000    37,598,000    
        prepaid expenses and other current assets
      8,347,000 9,690,000 7,052,000 6,996,000 8,075,000 13,744,000 14,991,000 11,187,000 11,474,000 12,643,000 11,474,000 10,576,000 12,070,000 13,977,000 10,804,000 11,935,000 16,501,000 17,252,000 13,062,000 16,509,000 18,400,000 15,603,000 10,649,000 9,621,000 10,638,000 8,703,000 8,249,000 6,853,000 11,367,000 11,728,000 10,625,000 9,416,000 6,704,000 7,519,000 5,682,000 5,301,000 4,663,000 5,114,000 5,265,000 5,101,000 4,386,000 4,096,000 3,619,000 3,481,000 4,312,000 5,914,000 4,695,000 6,401,000 8,010,000 7,412,000 7,022,000 7,034,000 5,268,000 5,125,000 5,685,000 6,573,000 7,052,000 7,155,000 8,699,000 7,009,000 4,090,000 3,451,000 4,032,000 3,067,000 2,070,000 1,734,000 2,298,000 2,964,000 5,970,000 5,405,000  3,590,000 4,121,000 3,630,000 3,985,000 4,079,000 3,602,000 2,859,000 1,801,000 1,956,000 2,438,000 3,351,000 2,523,000 2,107,000 2,572,000 2,019,000 1,575,000    4,002,000    
        total current assets
      253,775,000 246,556,000 149,755,000 144,960,000 149,531,000 158,272,000 167,861,000 167,396,000 163,742,000 170,656,000 160,310,000 165,470,000 177,002,000 183,545,000 181,456,000 177,380,000 160,064,000 160,185,000 159,618,000 164,442,000 162,950,000 164,518,000 108,548,000 110,729,000 111,262,000 113,205,000 108,723,000 111,703,000 118,142,000 128,540,000 132,595,000 137,470,000 133,557,000 140,521,000 135,986,000 143,245,000 138,661,000 107,286,000 101,600,000 98,337,000 97,039,000 96,888,000 93,552,000 94,440,000 99,622,000 104,800,000 107,650,000 105,940,000 99,540,000 100,706,000 94,991,000 97,195,000 106,472,000 108,439,000 112,082,000 107,898,000 103,103,000 103,655,000 95,864,000 93,939,000 96,955,000 83,441,000 81,634,000 82,101,000 79,474,000 73,550,000 73,652,000 84,878,000 95,487,000 90,617,000  81,043,000 77,774,000 77,832,000 74,109,000 50,841,000 44,475,000 46,594,000 46,210,000 46,685,000 47,722,000 52,228,000 56,448,000 59,239,000 64,425,000 68,155,000         
        property, plant and equipment
      164,622,000 161,860,000 159,283,000 159,714,000 159,035,000 159,721,000 166,459,000 161,332,000 163,122,000 166,348,000 158,773,000 158,672,000 162,524,000 161,017,000 152,727,000 152,882,000 147,286,000 142,415,000 131,617,000 127,241,000 119,878,000 115,825,000 108,295,000 101,031,000 97,490,000 97,403,000 89,680,000 87,613,000 84,975,000 82,280,000 74,754,000 65,174,000 58,763,000 46,530,000 42,255,000 27,945,000 27,141,000 27,805,000 29,385,000 30,178,000 31,141,000 31,422,000 32,346,000 33,366,000 33,223,000 34,663,000 35,226,000 36,179,000 37,621,000 37,450,000 37,301,000 37,477,000 37,235,000 36,201,000 35,316,000 34,566,000 34,282,000 31,619,000 28,814,000 26,173,000 24,240,000 22,709,000 20,314,000 20,293,000 20,808,000 20,957,000 21,511,000 21,462,000 19,100,000 17,120,000  15,072,000 14,814,000 13,757,000 12,775,000 10,772,000 16,648,000 16,359,000 17,306,000 17,560,000 17,556,000 17,775,000 19,045,000 20,512,000 20,968,000 20,861,000 21,795,000 22,730,000 23,743,000 39,178,000 39,982,000 47,189,000 59,337,000 83,640,000 
        operating lease right-of-use assets
      1,854,000 1,982,000 2,103,000 2,233,000 2,353,000 2,479,000 2,451,000 2,531,000 2,657,000 2,799,000 2,878,000 1,473,000 1,659,000 1,761,000 1,820,000 2,021,000 2,223,000 2,324,000 2,401,000 2,504,000 2,576,000 2,683,000 2,702,000 2,722,000 2,810,000 2,938,000 2,981,000 986,000 1,036,000                                                                  
        other assets
      24,347,000 23,353,000 22,893,000 22,096,000 22,558,000 18,842,000 18,809,000 18,154,000 19,443,000 18,898,000 20,229,000 18,946,000 23,796,000 21,631,000 21,577,000 21,222,000 19,426,000 17,941,000 15,347,000 12,273,000 11,039,000 10,110,000 10,308,000 11,018,000 11,078,000 9,803,000 11,807,000 12,328,000 10,405,000 11,987,000 11,194,000 11,323,000 11,476,000 11,573,000 11,696,000 12,004,000 11,853,000 12,842,000 12,084,000 12,787,000 13,544,000 14,114,000 14,721,000 15,000,000 15,128,000 15,216,000 15,170,000 14,752,000 14,801,000 14,830,000 14,352,000 14,196,000 14,275,000 14,183,000 13,918,000 13,983,000 14,101,000 15,143,000 14,263,000 11,950,000 11,884,000 6,313,000 6,199,000 6,160,000 5,768,000 5,531,000 5,375,000 5,246,000 5,739,000 5,468,000  5,036,000 4,843,000 4,499,000 4,298,000 3,806,000 3,743,000 3,685,000 3,832,000 3,758,000 3,789,000 3,802,000 3,832,000 3,089,000 3,290,000 4,258,000 3,963,000 4,773,000 4,704,000 5,936,000 5,341,000 5,104,000 5,088,000 4,165,000 
        total assets
      444,598,000 433,751,000 334,034,000 329,003,000 333,477,000 339,314,000 355,580,000 349,413,000 348,964,000 358,701,000 342,190,000 346,202,000 366,623,000 370,072,000 361,776,000 361,265,000 338,399,000 332,441,000 315,663,000 309,404,000 301,906,000 298,862,000 232,737,000 226,220,000 222,640,000 223,349,000 217,710,000 213,890,000 214,558,000 223,524,000 220,449,000 219,681,000 216,307,000 211,200,000 199,622,000 191,772,000 187,417,000 154,246,000 152,928,000 151,430,000 152,727,000 151,896,000 153,145,000 158,216,000 160,295,000 163,885,000 160,708,000 160,250,000 163,822,000 165,273,000 163,530,000 166,324,000 167,589,000 166,221,000 167,674,000 162,276,000 162,488,000 161,039,000 150,662,000 142,487,000 140,251,000 125,602,000 115,357,000 112,168,000 109,050,000 103,038,000 103,538,000 114,586,000 126,726,000 119,755,000  107,851,000 104,281,000 103,088,000 98,332,000 72,569,000 72,166,000 74,088,000 74,798,000 75,603,000 77,282,000 82,020,000 87,540,000 91,205,000 97,298,000 102,576,000         
        liabilities, redeemable noncontrolling interests and stockholders’ equity
                                                                                                    
        current liabilities:
                                                                                                    
        accounts payable
      16,141,000 12,947,000 10,848,000 11,242,000 11,106,000 12,356,000 12,780,000 11,655,000 10,262,000 9,617,000 6,369,000 4,692,000 6,766,000 10,084,000 13,354,000 23,317,000 14,399,000 16,649,000 11,384,000 16,130,000 13,399,000 12,669,000 12,271,000 11,540,000 9,518,000 10,098,000 8,147,000 6,004,000 7,882,000 13,338,000 12,344,000 14,059,000 12,049,000 11,445,000 9,499,000 8,189,000 8,159,000 6,691,000 7,277,000 7,848,000 8,034,000 6,460,000 5,959,000 7,323,000 9,131,000 9,480,000 6,612,000 7,618,000 8,140,000 8,596,000 5,375,000 6,581,000 5,894,000 4,570,000 5,860,000 4,177,000 3,286,000 6,598,000 3,745,000 6,076,000 7,094,000 5,979,000 4,008,000 6,895,000 7,165,000 4,347,000 4,202,000 8,674,000 14,228,000 8,973,000  2,770,000 2,141,000 3,115,000 3,764,000 4,078,000 3,453,000 2,463,000 3,070,000 2,316,000 1,816,000 1,779,000 1,895,000 2,160,000 2,791,000 2,893,000 2,638,000    4,228,000    
        accrued liabilities
      12,864,000 14,798,000 12,502,000 12,372,000 11,630,000 14,556,000 11,941,000 12,268,000 12,697,000 19,019,000 15,520,000 16,949,000 13,201,000 18,164,000 16,555,000 14,581,000 12,213,000 17,057,000 12,670,000 11,547,000 15,698,000 15,995,000 10,842,000 10,511,000 10,371,000 11,681,000 9,432,000 10,945,000 9,556,000 15,371,000 12,776,000 11,793,000 9,190,000 11,149,000 9,284,000 9,363,000 7,906,000 6,359,000 5,011,000 5,371,000 5,357,000 6,381,000 5,513,000 6,043,000 5,815,000 6,790,000 7,122,000 6,646,000 7,286,000 9,208,000 9,136,000 9,434,000 7,202,000 6,800,000 8,360,000 7,155,000 7,597,000 7,077,000 7,681,000 7,116,000 7,745,000 6,557,000 5,424,000 4,975,000 4,810,000 4,574,000 3,974,000 3,415,000 4,639,000 4,279,000  3,877,000 3,426,000 4,052,000 1,797,000 3,225,000 3,023,000 2,792,000 2,682,000 3,698,000 3,994,000 4,990,000 3,920,000 8,587,000 7,802,000 7,956,000 8,296,000    8,344,000    
        short-term loans
      68,871,000 62,796,000 61,547,000 55,928,000 52,520,000 47,264,000 54,052,000 50,724,000 49,048,000                                                                                      
        total current liabilities
      97,876,000 90,541,000 84,897,000 79,542,000 75,256,000 74,176,000 78,773,000 74,647,000 72,007,000 81,557,000 67,665,000 67,263,000 72,788,000 75,326,000 72,907,000 70,871,000 46,804,000 47,822,000 37,339,000 38,210,000 39,473,000 39,075,000 26,493,000 28,138,000 25,960,000 27,526,000 23,188,000 16,949,000 17,438,000 28,709,000 25,411,000 25,852,000 21,239,000 22,594,000 18,783,000 17,552,000 16,065,000 13,050,000 12,288,000 13,219,000 13,391,000 12,841,000 11,472,000 13,366,000 14,946,000 16,270,000 13,734,000 14,264,000 15,426,000 17,804,000 14,511,000 16,015,000 13,096,000 11,370,000 14,220,000 11,332,000 10,883,000 13,675,000 11,426,000 13,192,000 14,839,000 12,536,000 9,509,000 11,947,000 15,050,000 11,995,000 11,692,000 15,387,000 20,264,000 14,620,000  7,543,000 6,352,000 7,747,000 7,750,000 8,935,000 9,434,000 8,799,000 9,863,000 9,895,000 9,779,000 10,796,000 10,587,000 13,497,000 13,556,000 14,607,000         
        noncurrent operating lease liabilities
      1,309,000 1,441,000 1,587,000 1,714,000 1,855,000 1,977,000 1,993,000 2,083,000 2,211,000 2,351,000 2,437,000 1,157,000 1,275,000 1,322,000 1,384,000 1,596,000 1,810,000 1,935,000 2,035,000 2,156,000 2,249,000 2,374,000 2,415,000 2,455,000 2,542,000 2,695,000 2,744,000 895,000 926,000                                                                  
        other long-term liabilities
      8,447,000 7,138,000 7,094,000 7,116,000 10,194,000 8,253,000 8,595,000 9,570,000 9,655,000 5,647,000 4,007,000 3,398,000 4,222,000 3,678,000 2,128,000 2,069,000 2,263,000 2,453,000 1,628,000 1,693,000 1,510,000 1,881,000 744,000 396,000 503,000 366,000 324,000 391,000 213,000 283,000 320,000 296,000 329,000 289,000 278,000 220,000 232,000 330,000 307,000 307,000 308,000 344,000 345,000 332,000 350,000 323,000 366,000 272,000 325,000 155,000 157,000 148,000 254,000 157,000 131,000 119,000 431,000 107,000 118,000 102,000 108,000 30,000 3,000 29,000 65,000 64,000 64,000 3,233,000 3,028,000 2,983,000  3,129,000 2,592,000 2,099,000 2,543,000 2,237,000 1,958,000 1,643,000 1,897,000 1,483,000 1,362,000 1,219,000 1,336,000 1,313,000 1,282,000 1,306,000 1,255,000    1,712,000    
        total liabilities
      107,632,000 99,120,000 93,578,000 88,372,000 87,305,000 84,406,000 89,361,000 86,300,000 83,873,000 89,555,000 74,109,000 71,818,000 78,285,000 80,326,000 76,419,000 74,536,000 50,877,000 52,210,000 41,931,000 42,059,000 43,232,000 43,330,000 30,845,000 32,166,000 30,450,000 30,587,000 26,256,000 18,235,000 18,577,000 28,992,000 25,731,000 26,148,000 21,568,000 22,883,000 19,205,000 18,059,000 16,728,000 13,955,000 13,314,000 14,389,000 14,705,000 14,335,000 13,111,000 15,136,000 16,877,000 18,518,000 16,225,000 16,861,000 18,276,000 20,684,000 17,593,000 19,288,000 16,675,000 15,052,000 18,076,000 15,376,000 15,439,000 18,220,000 16,294,000 18,357,000 20,447,000 12,566,000 9,893,000 12,377,000 15,555,000 12,518,000 12,234,000 18,638,000 29,254,000 23,703,000  16,967,000 15,400,000 16,457,000 17,132,000 17,975,000 18,344,000 17,544,000 19,180,000 18,528,000 18,441,000 19,465,000 19,523,000 22,410,000 22,723,000 23,898,000         
        commitments and contingencies
                                                                                                    
        redeemable noncontrolling interests
      38,516,000 38,056,000 38,111,000 38,010,000 38,125,000 38,577,000 41,237,000 39,761,000 40,581,000 41,663,000 40,634,000 41,393,000 44,920,000 44,846,000 45,198,000 48,265,000 50,971,000 50,385,000 50,178,000 50,083,000 48,212,000 47,563,000                                                                         
        stockholders’ equity:
                                                                                                    
        preferred stock series a, 0.001 par value...
      3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000                                                     
        common stock, 0.001 par value...
      56,000 55,000 46,000 46,000 46,000 45,000 45,000 44,000 44,000 44,000 44,000 44,000 44,000 44,000 43,000 43,000 43,000 43,000 43,000 42,000 42,000 42,000 41,000 41,000 41,000 41,000 40,000 40,000 40,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 33,000 32,000 32,000 32,000 32,000 32,000 32,000 32,000    32,000    32,000    32,000    32,000              29,000    23,000    23,000            
        additional paid-in capital
      342,434,000 339,922,000 243,606,000 242,776,000 242,147,000 241,514,000 240,770,000 239,962,000 239,257,000 238,452,000 237,653,000 236,988,000 236,192,000 235,308,000 234,532,000 233,364,000 232,317,000 231,622,000 230,517,000 228,411,000 229,617,000 230,381,000 240,422,000 238,754,000 238,041,000 236,957,000 236,320,000 235,702,000 234,976,000 234,419,000 233,522,000 232,984,000 232,212,000 231,679,000 228,516,000 227,539,000 227,158,000         195,151,000 194,751,000 194,448,000  194,058,000 193,720,000 193,651,000  192,703,000 192,346,000 192,054,000  191,296,000 190,976,000 190,585,000  189,110,000 188,270,000 188,117,000 187,478,000 187,373,000 187,212,000 186,588,000 186,419,000 186,187,000  185,666,000 184,988,000 184,763,000  156,618,000 156,182,000 155,764,000  155,247,000               
        accumulated deficit
      -66,544,000 -64,924,000 -61,376,000 -59,470,000 -52,462,000 -43,664,000 -38,576,000 -35,639,000 -34,123,000 -32,040,000 -28,419,000 -22,596,000 -17,507,000 -14,159,000 -15,500,000 -21,259,000 -26,805,000 -29,970,000 -32,935,000 -36,735,000 -41,120,000 -44,545,000 -46,609,000 -47,600,000 -47,961,000 -47,783,000 -45,734,000 -44,836,000 -46,287,000 -45,183,000 -44,122,000 -48,061,000 -51,962,000 -54,837,000 -57,971,000 -62,390,000 -64,320,000 -64,985,000 -67,199,000 -69,428,000 -70,579,000 -70,621,000 -69,378,000 -69,420,000 -69,417,000 -68,082,000 -68,726,000 -69,045,000 -67,005,000 -65,777,000 -63,482,000 -61,447,000 -59,047,000 -58,291,000 -59,223,000 -60,522,000 -62,157,000 -64,723,000 -71,207,000 -78,269,000 -82,477,000                         -81,488,000 -78,928,000        
        accumulated other comprehensive loss
      -4,604,000 -5,295,000 -6,660,000 -7,170,000 -8,226,000 -8,657,000 -5,038,000 -8,227,000 -7,626,000 -5,999,000 -8,581,000 -8,175,000 -2,260,000          -1,992,000 -6,365,000 -6,637,000 -4,862,000 -7,240,000 -3,130,000 -733,000                                                                  
        total axt, inc. stockholders’ equity
      274,874,000 273,290,000 179,148,000 179,714,000 185,037,000 192,770,000 200,733,000 199,672,000 201,084,000 203,989,000 204,229,000 209,793,000 220,001,000 221,607,000 217,150,000 216,317,000 215,716,000 211,529,000 205,740,000 199,783,000 195,149,000 192,619,000 195,394,000 188,362,000 187,016,000 187,885,000 186,918,000 191,308,000 191,528,000 190,835,000 191,125,000 189,666,000 189,667,000 183,820,000 176,391,000 170,013,000 166,959,000 135,911,000 134,757,000 132,136,000 132,549,000 131,971,000 133,733,000 136,444,000 136,919,000 138,966,000   139,668,000 138,833,000 140,452,000  143,613,000 143,982,000 142,850,000   135,667,000 128,699,000   109,572,000 102,461,000 97,205,000 91,104,000 88,339,000 88,796,000                            
        noncontrolling interests
      23,576,000 23,285,000 23,197,000 22,907,000 23,010,000 23,561,000 24,249,000 23,680,000 23,426,000 23,494,000 23,218,000 23,198,000 23,417,000 23,293,000 23,009,000 22,147,000 20,835,000 18,317,000 17,814,000 17,479,000 15,313,000 15,350,000 6,498,000 5,692,000 5,174,000 4,877,000 4,536,000 4,347,000 4,453,000 3,697,000 3,593,000 3,867,000 5,072,000 4,497,000 4,026,000 3,700,000 3,730,000 4,380,000 4,857,000 4,905,000 5,473,000 5,590,000 6,301,000 6,636,000 6,499,000 6,401,000  5,922,000 5,878,000 5,756,000 5,485,000 4,902,000 7,301,000 7,187,000 6,748,000 5,615,000 8,270,000 7,152,000 5,669,000 3,530,000 4,044,000 3,464,000 3,003,000 2,586,000 2,391,000 2,181,000 2,508,000                            
        total stockholders’ equity
      298,450,000 296,575,000 202,345,000 202,621,000 208,047,000 216,331,000 224,982,000 223,352,000 224,510,000 227,483,000 227,447,000 232,991,000 243,418,000 244,900,000 240,159,000 238,464,000 236,551,000 229,846,000 223,554,000 217,262,000 210,462,000 207,969,000 201,892,000 194,054,000 192,190,000 192,762,000 191,454,000 195,655,000 195,981,000 194,532,000 194,718,000 193,533,000 194,739,000 188,317,000 180,417,000 173,713,000 170,689,000 140,291,000 139,614,000 137,041,000 138,022,000 137,561,000 140,034,000 143,080,000 143,418,000 145,367,000 144,483,000 143,389,000 145,546,000 144,589,000 145,937,000 147,036,000 150,914,000 151,169,000 149,598,000 146,900,000 147,049,000 142,819,000 134,368,000 124,130,000 119,804,000 113,036,000 105,464,000 99,791,000 93,495,000 90,520,000 91,304,000 95,948,000 97,472,000 96,052,000  90,884,000 88,881,000 86,631,000 81,200,000 54,594,000 53,822,000 56,544,000 55,618,000 57,075,000 58,841,000 62,555,000 68,017,000 68,795,000 74,575,000 78,678,000         
        total liabilities, redeemable noncontrolling interests and stockholders’ equity
      444,598,000 433,751,000 334,034,000 329,003,000 333,477,000 339,314,000 355,580,000 349,413,000 348,964,000 358,701,000 342,190,000 346,202,000 366,623,000 370,072,000 361,776,000 361,265,000 338,399,000 332,441,000 315,663,000 309,404,000 301,906,000 298,862,000                                                                         
        cash
            24,898,000 27,808,000 25,793,000                                                                                      
        long-term investments
                 1,641,000 1,642,000 2,118,000 4,196,000 7,760,000 9,400,000 9,576,000 6,680,000 2,944,000 5,463,000 5,726,000 2,884,000 720,000   4,519,000 1,260,000  717,000 1,906,000 5,714,000 12,511,000 12,576,000 9,685,000 8,578,000 9,762,000 6,156,000 8,124,000 8,387,000 9,211,000 7,691,000 10,713,000 13,699,000 10,612,000 7,332,000 959,000 1,678,000 10,145,000 12,287,000 16,886,000 17,038,000 9,191,000 5,367,000 4,322,000 3,795,000 8,981,000 8,984,000 11,721,000 10,425,000 7,172,000 13,139,000 7,210,000 3,614,000                        2,406,000 2,919,000 2,197,000 3,657,000 6,906,000 14,281,000  
        bank loans
               52,921,000 45,776,000 45,622,000 52,821,000 47,078,000                                                                                 
        short-term loan from noncontrolling interest
                       1,887,000                                                                             
        accumulated other comprehensive income
                   -3,118,000 -5,457,000 637,000 6,629,000 6,302,000 4,583,000 4,533,000 3,078,000 3,209,000        -1,972,000 -1,846,000 1,172,000 5,846,000 3,407,000 2,275,000 1,293,000 550,000 253,000 2,529,000 2,844,000 4,665,000 4,382,000 5,166,000 7,586,000 7,620,000 8,333,000 8,722,000 8,500,000 8,953,000 6,988,000 6,650,000 6,366,000 6,033,000 6,006,000 6,163,000 6,189,000  5,530,000 5,366,000 4,720,000  4,276,000 3,644,000 4,076,000 3,971,000 3,432,000 2,770,000 2,659,000 3,338,000 2,887,000  2,073,000 1,606,000 794,000  1,637,000 1,940,000 4,204,000  318,000  227,000  114,000 1,007,000          
        bank loan
                    42,998,000 32,973,000 20,192,000 12,229,000 13,285,000 10,533,000 10,376,000 10,411,000 3,380,000 6,087,000 6,071,000 5,747,000 5,609,000    291,000                                                                
        ​
                                                                                                    
        long-term loan, related party
                        929,000                                                                            
        liabilities and stockholders’ equity
                                                                                                    
        long-term portion of royalty payments
                            1,193,000 1,177,000 1,445,000          144,000 287,000 431,000 575,000 719,000 863,000 1,006,000 1,150,000 1,294,000 1,438,000 1,581,000 1,925,000 2,125,000 2,325,000 2,525,000 2,725,000 2,925,000 3,125,000 3,325,000 3,525,000 3,725,000 3,925,000 4,125,000 4,438,000 4,750,000 5,063,000 5,500,000                                  
        total liabilities and stockholders’ equity
                            232,737,000 226,220,000 222,640,000 223,349,000 217,710,000 213,890,000 214,558,000 223,524,000 220,449,000 219,681,000 216,307,000 211,200,000 199,622,000 191,772,000 187,417,000 154,246,000 152,928,000 151,430,000 152,727,000 151,896,000 153,145,000 158,216,000 160,295,000 163,885,000 160,708,000 160,250,000 163,822,000 165,273,000 163,530,000 166,324,000 167,589,000 166,221,000 167,674,000 162,276,000 162,488,000 161,039,000 150,662,000 142,487,000 140,251,000 125,602,000 115,357,000 112,168,000 109,050,000 103,038,000 103,538,000 114,586,000 126,726,000 119,755,000  107,851,000 104,281,000 103,088,000 98,332,000 72,569,000 72,166,000 74,088,000 74,798,000 75,603,000 77,282,000 82,020,000 87,540,000 91,205,000 97,298,000 102,576,000         
        related party notes receivable – long-term
                                           157,000 1,735,000 1,741,000 1,792,000 1,781,000 1,813,000 1,711,000 1,710,000 1,874,000 1,703,000 1,701,000 1,715,000   418,000 416,000 2,031,000 2,036,000 2,034,000                                       
        related party notes receivable – current
                                        57,000 109,000 159,000             2,517,000 2,502,000 2,047,000  414,000 415,000 414,000                                       
        additional paid-in-capital
                                           197,078,000 195,863,000 195,156,000 194,899,000 194,646,000 194,381,000 194,714,000 195,152,000    194,156,000    193,063,000    191,554,000    190,021,000              180,936,000    155,441,000  155,296,000 155,457,000 155,431,000            
        current assets
                                                                                                    
        preferred stock, 0.001 par value...
                                                3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000           3,532,000    3,532,000    3,532,000            
        related party notes receivable - current
                                                 174,000 173,000        2,036,000    412,000                                      
        common stock, 0.001 par value per share...
                                                   32,000 32,000 32,000  32,000 32,000 32,000  32,000 32,000 32,000  32,000 32,000 32,000  30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000 30,000  30,000 30,000 30,000  23,000 23,000 23,000  23,000 23,000 23,000  155,448,000 155,371,000          
        axt, inc. stockholders’ equity
                                                    138,311,000 137,467,000    142,134,000    141,285,000 138,779,000   120,600,000 115,760,000                                  
        non-controlling interests
                                                    6,172,000                                                
        current liabilities
                                                                                                    
        related party notes receivable - long-term
                                                              2,021,000                                      
        other comprehensive income
                                                              5,818,000    4,652,000              535,000    1,398,000    1,592,000   1,302,000 2,516,000    -163,000    
        assets:
                                                                                                    
        related party notes receivable
                                                               1,638,000                                     
        liabilities and stockholders’ equity:
                                                                                                    
        current portion of long-term debt
                                                                    77,000 77,000 75,000 74,000 74,000  450,000 735,000  450,000 450,000 450,000 450,000 450,000 450,000 450,000 300,000 450,000 450,000 450,000 450,000 2,108,000 1,923,000 3,758,000 3,694,000    965,000    
        long-term debt
                                                                    381,000 401,000 440,000 459,000 478,000 18,000 5,962,000 6,100,000  6,295,000 6,456,000 6,611,000 6,839,000 6,803,000 6,952,000 7,102,000 7,420,000 7,150,000 7,300,000 7,450,000 7,600,000 7,600,000 7,885,000 7,985,000 8,842,000    13,289,000    
        restricted deposits
                                                                      3,000,000 3,000,000 3,000,000 3,000,000 6,400,000 6,550,000  6,700,000 6,850,000 7,000,000 7,150,000 7,150,000 7,300,000 7,450,000 7,450,000 7,600,000 8,215,000 8,215,000 8,215,000 8,365,000 8,615,000 9,302,000 9,302,000 9,402,000 9,567,000 10,722,000 11,150,000 10,315,000   
        line of credit
                                                                      3,000,000 3,000,000 3,000,000 3,000,000                           
        preferred stock, 0.001 par value per share...
                                                                      3,532,000 3,532,000 3,532,000 3,532,000 3,532,000 3,532,000  3,532,000 3,532,000 3,532,000  3,532,000 3,532,000 3,532,000  3,532,000 3,532,000 3,532,000  3,532,000 3,532,000          
        accrued restructuring
                                                                        442,000           128,000  375,000 504,000 548,000  642,000 1,040,000          
        assets held for sale
                                                                             5,140,000 5,140,000 4,659,000 4,659,000 4,659,000      1,250,000 1,250,000 1,000,000 1,000,000 1,000,000 1,000,000    5,957,000    
        income taxes payable
                                                                         298,000 947,000 633,000  446,000 335,000 130,000 178,000 1,182,000 2,508,000 2,966,000 2,495,000 3,056,000 3,015,000 3,029,000 2,925,000            
        liabilities and stockholders' equity
                                                                                                    
        stockholders' equity:
                                                                                                    
        accrued compensation and related charges
                                                                                1,102,000    726,000    715,000            
        accrued product warranty
                                                                                459,000                    
        accrued restructuring costs
                                                                                    465,000    552,000            
        customer prepayments
                                                                                    125,000    130,000            
        investments
                                                                                  6,199,000 9,163,000  9,655,000              16,071,000 
        liabilities:
                                                                                                    
        preferred stock, .001 par value per share...
                                                                                           3,532,000         
        common stock, .001 par value per share...
                                                                                           155,332,000         
        income tax receivable
                                                                                                8,783,000    
        current portion of capital lease obligation
                                                                                                3,562,000    
        long-term capital lease, net of current portion
                                                                                                4,847,000    
        preferred stock, .001 par value...
                                                                                            3,532,000    3,532,000    
        common stock, .001 par value...
                                                                                            155,178,000    154,485,000    
        deferred income taxes
                                                                                                    
        goodwill
                                                                                                  1,107,000 1,195,000 
        income tax payable
                                                                                                3,063,000    
        retained earnings
                                                                                                -52,197,000    
      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 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-30 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2010-03-30 2009-09-30 2009-06-30 2009-03-31 2008-09-30 2008-06-30 2008-03-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2004-09-30 2004-06-30 2004-03-31 2003-12-31 2003-09-30 2003-06-30 2003-03-31 2002-12-31 2002-09-30 
                                                                                                    
          cash flows from operating activities:
                                                                                                    
          net loss
        -1,485,000 -3,839,000 -1,673,000 -7,674,000 -10,016,000  -2,887,000 -1,199,000 -2,048,000                                -67,000 -1,805,000 47,000 124,000 -899,000 870,000 561,000 -1,835,000                            639,000 -876,000 -2,203,000 -2,731,000 -2,082,000   -2,262,000 -4,964,000 -3,847,000 -2,560,000       
          adjustments to reconcile net loss to net cash from operating activities:
                                                                                                    
          depreciation and amortization
        2,435,000 2,319,000 2,306,000 2,260,000 2,223,000  2,296,000 2,248,000 2,192,000  2,181,000 2,125,000 2,118,000  2,055,000 2,012,000 1,983,000 -5,077,922 1,824,000 1,665,000 1,596,000 -2,958,667 995,000 975,000 993,000 -4,167,469 1,343,000 1,370,000 1,460,000 -3,440,129 1,238,000 1,137,000 1,070,000 1,061,000 1,111,000 1,110,000 1,140,000 1,245,000 1,222,000 1,220,000 1,178,000 1,297,000 1,389,000 1,405,000 1,403,000 1,400,000 1,415,000 1,404,000 1,395,000 1,413,000 1,371,000 1,291,000 1,095,000 991,000 934,000 907,000 898,000 849,000 848,000 815,000                                 
          amortization of marketable securities premium
        44,000          4,000 7,000 7,000  11,000 16,000 23,000 -44,932 16,000 14,000 15,000 -27,966 8,000 10,000 10,000 -25,963 3,000 5,000 18,000 -119,842 39,000 38,000 43,000 49,000 49,000 48,000 27,000 9,000 23,000 24,000 38,000 50,000 55,000 58,000 55,000 107,000 123,000 122,000 124,000 125,000 123,000 146,000 103,000 78,000 71,000 71,000  92,000 89,000 98,000  127,000                               
          stock-based compensation
        1,035,000 1,275,000 738,000 633,000 646,000  820,000 715,000 809,000  891,000 912,000 915,000  1,036,000 1,137,000 1,088,000 -3,425,481 1,639,000 975,000 816,000 -1,929,377 648,000 641,000 643,000 -1,706,654 583,000 568,000 558,000 -1,390,075 461,000 464,000 467,000 444,000 339,000 310,000 312,000 307,000 281,000 255,000 253,000 298,000 311,000 466,000 274,000 272,000 297,000 292,000  334,000 338,000 332,000 342,000 300,000 292,000 281,000 258,000 216,000 215,000 207,000 235,000 187,000 119,000 114,000 114,000 98,000 121,000 458,000 147,000 151,000 170,000 130,000 91,000 120,000 173,000 206,000                 
          gain on disposal of equipment
        -20,000  -4,000 -3,000          -194,000 34,000 24,000                                                                            
          equity in income of unconsolidated joint ventures
        -353,000    -248,000  -1,007,000 -598,000 -890,000  -369,000 -941,000 -1,034,000  -2,006,000 -2,177,000 -1,125,000                                                                            
          deferred tax assets
        97,000 -37,000 -13,000 -27,000 -11,000  -75,000 13,000 40,000  12,000 120,000 -10,000  104,000 69,000 -8,000                                                                            
          changes in operating assets and liabilities:
                                                                                                    
          accounts receivable
        -4,860,000 7,310,000 -10,885,000 317,000 2,868,000  -163,000 -2,287,000 -6,076,000  853,000 759,000 7,982,000  -468,000 -23,000 -4,915,000 11,707,339 -3,044,000 -4,787,000 -3,886,000 3,494,667 -2,646,000 3,837,000 -4,691,000 -1,875,559 572,000 1,151,000 153,000 919,819 -978,000 -1,625,000 1,686,000 -1,771,000 -2,523,000 -527,000 -3,156,000 3,537,000 -385,000 1,536,000 -1,223,000 -1,439,000 1,993,000 -578,000 -1,052,000 -1,786,000 -2,937,000 -1,459,000 1,077,000 3,509,000 -3,348,000 922,000 -1,022,000 5,467,000 -5,741,000 1,350,000 4,042,000 967,000 -3,760,000 3,916,000    196,000 196,000   3,108,000      1,112,000         1,203,000 -847,000 2,524,000 -617,000       
          inventories
        -7,419,000 -2,757,000 2,885,000 1,204,000 5,015,000  2,179,000 -325,000 -720,000  210,000 243,000 -1,466,000  -17,070,000 -13,003,000 -2,586,000 8,289,599 -1,725,000 -3,334,000 -3,243,000 -1,638,916 2,540,000 -1,256,000 354,000 -8,263,138 63,000 1,930,000 6,279,000 14,622,371 -2,714,000 -7,370,000 -4,553,000 -4,674,000 53,000 -1,184,000 1,065,000 -1,867,000 -145,000 -191,000 -756,000 -58,000 275,000 596,000 -858,000 -1,383,000 2,798,000 985,000 -708,000 -1,470,000 1,968,000 1,649,000 -412,000 899,000 1,142,000 4,030,000 -1,630,000 -4,642,000 206,000 -3,773,000      -356,000 5,183,000 1,583,000          354,000 -556,000 -264,000 648,000 478,000 1,543,000 3,817,000 1,072,000 1,189,000       
          prepaid expenses and other current assets
        -85,000 -2,749,000 -1,196,000 800,000 4,534,000  -4,506,000 -942,000 -375,000  -1,035,000 979,000 1,965,000  1,624,000 4,011,000 810,000 -958,798 1,641,000 2,135,000 -2,818,000 1,783,281 -794,000 1,046,000 -2,042,000 -3,274,064 -1,593,000 4,353,000 517,000 3,487,400 -1,417,000 -3,068,000 993,000 -1,722,000 -323,000 -582,000 318,000 36,000 -178,000 -800,000 -281,000 -515,000 -34,000 830,000 1,124,000 -1,224,000 1,716,000 1,584,000 1,085,000   -1,740,000 -139,000 550,000 882,000 491,000 -297,000 1,531,000 -1,621,000 -2,926,000      -338,000                           
          other assets
        -512,000 38,000 -153,000 181,000 -3,122,000  1,084,000 24,000 65,000  816,000 458,000 -1,055,000  -715,000 -405,000 -341,000 518,717 -211,000 -449,000 135,000 423,896 978,000 -19,000 -1,383,000 3,106,812 65,000 -2,407,000 -766,000 -49,888 -11,000 123,000 -64,000 -116,000 92,000 -274,000 246,000 23,000 99,000 222,000 114,000 213,000 71,000 409,000 -151,000 -256,000 -417,000 18,000 -1,782,000 -457,000 275,000 105,000 -77,000 -279,000 58,000 124,000 1,832,000 -1,715,000 378,000 -69,000    38,000 38,000   58,000        -63,000 -58,000 147,000  31,000 13,000 30,000  -9,000 60,000 -21,000       
          accounts payable
        2,993,000 1,900,000 -463,000 8,000 -1,298,000  744,000 1,484,000 815,000  1,817,000 -1,841,000 -3,351,000  -10,458,000 11,122,000 -2,299,000 1,426,563 -4,688,000 2,520,000 745,000 -1,989,695 454,000 2,022,000 -484,000 4,989,863 2,337,000 -1,775,000 -5,555,000 -1,280,686 -1,550,000 2,499,000 334,000 1,812,000 1,221,000 -56,000 1,424,000 -425,000 -558,000 -50,000 1,557,000 568,000 -1,219,000 -1,813,000 1,979,000 2,872,000 -1,011,000 -489,000 -462,000 3,193,000 -1,210,000 664,000 1,321,000 -1,277,000 1,681,000 883,000 -3,302,000 2,831,000 -2,355,000 -1,014,000 1,114,000   1,366,000 1,366,000    -5,353,000 4,990,000 4,469,000    -314,000 625,000   754,000      -102,000 255,000       
          accrued liabilities
        -1,742,000 2,336,000 79,000 691,000 -2,956,000  -580,000 -249,000 -558,000  -137,000 -37,000 -1,568,000  -250,000 2,190,000 -4,867,000 7,188,555 1,064,000 -4,238,000 -4,018,000  126,000 36,000 -1,388,000  -1,552,000 1,332,000 -5,996,000  1,159,000 1,682,000 -2,096,000 1,749,000 -128,000 1,394,000 -1,373,000 1,506,000 -359,000 109,000 -1,051,000 947,000    -335,000   -1,673,000 50,000   1,256,000 -1,062,000   505,000 -603,000 525,000 -624,000 1,190,000 1,128,000 544,000 325,000 325,000       424,000 -633,000 684,000        96,000    -340,000       
          other long-term liabilities
        -1,812,000 -1,343,000 -261,000 -4,004,000 -978,000  -3,324,000 -104,000 -2,060,000  366,000                             -278,000 -148,000 -254,000 -290,000 -159,000 -110,000 -241,000 -99,000 -308,000 121,000 -170,000 -54,000 -270,000 -76,000 -183,000 -182,000 -459,000 67,000 -235,000 -218,000 -395,000    9,000 9,000          306,000 279,000   414,000 121,000   22,000 31,000 -24,000 51,000       
          net cash from operating activities
        -11,684,000 4,290,000 -9,151,000 -4,576,000 -3,346,000  -5,419,000 843,000 -8,806,000  -792,000 4,300,000 -1,534,000  -14,838,000 14,443,000 -8,906,000 10,733,695 -168,000 -2,260,000 -8,309,000 -6,318,135 4,341,000 8,087,000 -6,104,000 -7,324,342 1,390,000 8,810,000 -2,863,000 230,218 234,000 -2,056,000 1,595,000 625,000 4,784,000 2,133,000 1,073,000 6,996,000 2,538,000 3,081,000 -111,000 -382,000 2,008,000 601,000 -349,000 -330,000 3,294,000 -387,000 -1,498,000 4,414,000 -1,383,000 976,000 1,737,000 6,928,000 3,086,000 9,551,000 6,104,000 7,118,000 3,384,000 1,526,000 1,505,000 4,647,000 626,000 4,231,000 4,231,000                     -1,506,000       
          capital expenditures
        -1,372,000 -3,031,000 -2,175,000 -279,000 -510,000  -941,000 -271,000 -4,392,000  -4,386,000 -3,176,000 -3,616,000  -7,911,000 -14,560,000 -6,294,000 19,065,355 -6,062,000 -7,257,000 -5,776,000 12,101,145 -5,656,000 -4,326,000 -2,139,000 13,947,208 -5,743,000 -5,317,000 -2,909,000 34,248,461 -12,369,000 -10,071,000 -11,849,000 -14,726,000 -1,563,000 -268,000 -528,000 -505,000 -900,000 -795,000 -642,000 -1,498,000 -676,000 -774,000 -437,000 -163,000 -1,505,000 -1,460,000 -1,110,000 -1,349,000 -2,128,000 -1,973,000 -1,854,000 -1,124,000 -3,529,000 -3,596,000 -3,190,000 -2,787,000                     -280,000       
          free cash flows
        -13,056,000 1,259,000 -11,326,000 -4,855,000 -3,856,000  -6,360,000 572,000 -13,198,000  -5,178,000 1,124,000 -5,150,000  -22,749,000 -117,000 -15,200,000 29,799,050 -6,230,000 -9,517,000 -14,085,000 5,783,010 -1,315,000 3,761,000 -8,243,000 6,622,866 -4,353,000 3,493,000 -5,772,000 34,478,679 -12,135,000 -12,127,000 -10,254,000 625,000 -9,942,000 570,000 805,000 6,468,000 2,033,000 2,181,000 -906,000 -1,024,000 2,008,000 -897,000 -1,025,000 -1,104,000 2,857,000 -550,000 -3,003,000 2,954,000 -2,493,000 -373,000 -391,000 4,955,000 1,232,000 8,427,000 2,575,000 3,522,000 194,000 -1,261,000 1,505,000 4,647,000 626,000 4,231,000 4,231,000                     -1,786,000       
          cash flows from investing activities:
                                                                                                    
          purchases of property, plant and equipment
        -1,372,000 -3,031,000 -2,175,000 -279,000 -510,000  -941,000 -271,000 -4,392,000  -4,386,000 -3,176,000 -3,616,000  -7,911,000 -14,560,000 -6,294,000 19,065,355 -6,062,000 -7,257,000 -5,776,000 12,101,145 -5,656,000 -4,326,000 -2,139,000 13,947,208 -5,743,000 -5,317,000 -2,909,000 34,248,461 -12,369,000 -10,071,000 -11,849,000           -1,498,000 -676,000 -774,000 -437,000 -163,000 -1,505,000 -1,460,000 -1,110,000 -1,349,000 -2,128,000 -1,973,000 -1,854,000 -1,124,000 -3,529,000 -3,596,000 -3,190,000 -2,787,000                          -280,000 -264,000 -207,000 -787,000 -917,000 -3,826,000 -4,396,000 
          purchases of available-for-sale debt securities
        -65,888,000                 6,681,355    2,874,032                                                                       
          investments in non-marketable equity investments
         -561,000 -276,000  -285,000                                                                                    
          net cash from investing activities
        -67,260,000 -3,031,000 -2,175,000 -840,000 -786,000  454,000 -546,000 -3,912,000  -1,784,000 -2,349,000 -713,000  -7,151,000 -12,080,000 -6,294,000 25,507,190 -12,753,000 -7,257,000 -5,536,000 10,083,578 -7,096,000 -1,585,000 -1,419,000 1,697,672 -7,606,000 -991,000 6,891,000 25,593,173 -11,649,000 -6,868,000 -7,107,000 -7,226,000 -13,861,000 -2,357,000 -13,014,000 -480,000 639,000 -1,509,000 237,000 -366,000 -3,157,000 -4,259,000 5,299,000 -316,000 307,000 -1,703,000 -697,000 1,259,000 -1,145,000 -5,629,000 -6,652,000 -2,200,000 -2,813,000 -1,503,000 -4,446,000 -4,190,000 -5,928,000 -866,000         -417,000 -3,701,000 8,741,000         298,000 3,178,000 5,937,000    -5,483,000       
          cash flows from financing activities:
                                                                                                    
          proceeds from common stock options exercised
        1,478,000      3,000 5,000 20,000  2,000 8,000  371,000   -1,590,330 468,000 420,000 704,000 -1,134,464 624,000 72,000 441,000 -266,732 35,000           909,000 426,000   89,000 76,000 128,000   254,000 6,000 16,000 256,000 18,000 57,000 219,000 104,000 176,000 357,000 678,000 653,000 34,000 132,000 132,000                            
          proceeds from short-term bank loans
        20,928,000 15,304,000 18,835,000 10,746,000 13,674,000  15,094,000 13,630,000 12,858,000                                                                                    
          payments on short-term bank loans
        -16,566,000 -14,935,000 -13,476,000 -10,908,000 -9,250,000  -13,963,000 -11,791,000 -16,541,000                                                                                    
          proceeds from long-term loans
        2,897,000  422,000                                                                                          
          payments on long-term loans
        -743,000  -685,000                                                                                          
          net cash from financing activities
        7,994,000 95,342,000 5,192,000 -321,000 6,882,000  824,000 1,679,000 2,000,000  573,000 -4,104,000 5,773,000  13,235,000 14,121,000 7,919,000 -7,073,275 3,857,000 608,000 2,614,000 1,029,662 -1,796,000 -13,000 832,000 -6,124,814 5,795,000 -30,000 366,000 -139,787 125,000 -51,000 66,000 2,719,000 638,000 71,000 32,210,000 909,000 426,000 2,000 -39,000 -43,000 -666,000 -984,000 -541,000    -774,000 4,000 -1,467,000 -276,000 18,000 -478,000 -167,000 -3,165,000 104,000 176,000 -1,279,000           192,000  -24,000 3,479,000 24,187,000           -639,000       
          effect of exchange rate changes on cash, restricted cash and cash equivalents
        453,000 555,000 2,237,000 2,660,000 1,623,000          629,000                                                                              
          net decrease in cash, restricted cash and cash equivalents
        -70,497,000                                                                                            
          cash, restricted cash and cash equivalents at the beginning of the year
        128,366,000 33,811,000                                                                                        
          cash, restricted cash and cash equivalents at the end of the period
        57,869,000 97,156,000 -3,897,000 -3,077,000 38,184,000          -8,125,000                                                                              
          supplemental disclosure of non-cash flow information:
                                                                                                    
          notes receivables paid to purchase fixed assets
        1,519,000 258,000 1,189,000 345,000 1,165,000  1,063,000 1,168,000 1,377,000                                                                                    
          consideration payable in connection with construction in progress, included in accrued liabilities
        137,000 282,000     5,000 123,000 21,000  -611,000    2,791,000                                                                              
          provision for credit losses
                                                                                                    
          loss on sale of equity investment
                                                                                                    
          loss on disposal of equipment
                  14,000 -1,000 5,000     7,992 -1,000 -9,000 2,000 -35,950    -42,928 13,000 -1,000 31,000 -25,099            1,000                                                   
          return of equity method investments as dividends
                                                                                                 
          proceeds from sales and maturities of available-for-sale debt securities
              1,680,000 480,000  4,520,000 2,903,000  2,920,000   -239,520 240,000 -4,891,599 1,440,000 2,741,000 720,000                                                                    
          proceeds from sales of equity securities - 15% jia mei
                                                                                                    
          proceeds from issuance of common stock and options exercised, net of issuance costs
                                     -263,372 86,000 112,000 66,000 954,000 638,000 71,000 32,675,000                                                        
          proceeds from capital increase in subsidiary shares from noncontrolling interests
                  199,000                                                                                  
          proceeds from long-term loan
            2,755,000  5,831,000                                                                                    
          payments on long-term loan
            -297,000  -310,000 -165,000 -168,000                                                                                    
          net increase in cash, restricted cash and cash equivalents
           -3,077,000 4,373,000          -8,125,000                                                                              
          supplemental disclosures:
                                                                                                    
          income taxes paid, net of refunds
                                                                                                    
          interest expense paid
                                                                                                    
          loan proceeds received by notes receivable
                                                                                                    
          non-cash consideration received from sale of dongfang
                                                                                                    
          investment in subsidiary shares from noncontrolling interest
                  87,000 149,000 72,000  259,000 268,000 410,000                                                                            
          gain from equity method and fair value investments
          -515,000                                                                                          
          ​
                                                                                                    
          net cash from:
                                                                                                    
          operating activities
                                                                                                    
          investing activities
                                                                                                    
          financing activities
                                                                                                    
          effect of exchange rate changes
                                                                                  194,000 196,000          -58,000 111,000 131,000 1,000 -46,000 -484,000 -33,000 
          net change in cash and restricted cash
                                                                                                    
          cash, restricted cash and cash equivalents—beginning year
                                                                                                    
          cash, restricted cash and cash equivalents —end of year
                                                                                                    
          short and long-term investments—end of year
                                                                                                    
          total cash, restricted cash, cash equivalents and short-term and long-term investments
                                                                                                    
          effect of exchange rate changes on cash and restricted cash
              1,335,000 21,000 204,000                                                                                    
          net decrease in cash and restricted cash
              -2,806,000                                                                                      
          cash and restricted cash at the beginning of the year
              50,114,000                                                                                    
          cash and restricted cash at the end of the period
              -2,806,000 1,997,000 39,600,000                                                                                    
          net increase in cash and restricted cash
                -10,514,000                                                                                    
          net change in cash, restricted cash and cash equivalents
                                                                                                    
          cash, restricted cash and cash equivalents—end of year
                                                                                                    
          net income
                  -6,415,000 -5,353,000 -3,666,000  6,730,000 6,545,000 3,972,000 -12,859,491 4,496,000 4,615,000 3,765,000 -2,651,959 1,481,000 959,000 217,000 -221,588 -495,000 1,738,000 -1,023,000 -11,876,991 4,147,000 4,551,000 3,190,000 3,273,000 4,565,000 1,798,000 425,000 2,024,000 2,211,000          -1,188,000 -2,065,000 -1,601,000 -1,959,000 -673,000 1,444,000 2,427,000 2,952,000 3,606,000 7,862,000 9,068,000 5,287,000 5,395,000 6,319,000 5,952,000 2,710,000 2,710,000    -1,014,000 737,000 1,959,000 858,000 1,213,000 1,344,000        -4,123,000           
          adjustments to reconcile net income to net cash from operating activities:
                                                                                                    
          proceeds from sales of equity securities - 15% of jia mei
                                                                                                    
          proceeds from bank loans
                  13,394,000 10,431,000 18,372,000                                                                                
          payments on bank loans
                  -13,020,000 -14,843,000 -12,810,000                                                                                
          effect of exchange rate changes on cash and cash equivalents, and restricted cash
                  417,000 -1,854,000 19,000                                                                                
          net increase in cash and cash equivalents, and restricted cash
                  -1,586,000 -4,007,000 3,545,000                                                                                
          cash and cash equivalents, and restricted cash at the beginning of the year
                  41,348,000                                                                                
          cash and cash equivalents, and restricted cash at the end of the period
                  -1,586,000 -4,007,000 44,893,000                                                                                
          conversion of related party borrowings to additional paid-in capital
                      1,887,000                                                                            
          bank loan proceeds paid directly to a third-party vendor, included in accounts payable
                                                                                                    
          sales of land and building to unconsolidated joint venture
                                                                                                    
          return of equity method investments
                         -773,226                                                                          
          other long-term liabilities, including royalties
                    -2,376,000  3,155,000 2,915,000 -665,000 1,062,849 -118,000 -639,000 -307,000 -1,686,122 516,000 -375,000 1,547,000 -45,882 -153,000 192,000 7,000 147,740 -172,000 -167,000 191,000 156,000 61,000 -91,000 -211,000 -280,000                                                       
          proceeds from capital increase in subsidiary shares from noncontrolling interest
                    203,000  919,000                                                                              
          cash and cash equivalents—beginning year
                                                                                                    
          proceeds from sale of subsidiary shares to noncontrolling interests
                         -537,462 538,000 -395,604                                                                       
          proceeds from long-term loan from noncontrolling interest
                                                                                                    
          formation of new subsidiary with noncontrolling interests
                         -1,281,717 641,000 642,000                                                                        
          costs from issuance of tongmei's common stock to redeemable noncontrolling interests, net of proceeds
                                                                                                    
          cash and cash equivalents at the beginning of the year
                      36,763,000 -72,529,398 72,602,000 -26,865,108 26,892,000                                                                    
          sale of land and building to unconsolidated joint venture
                                                                                                    
          proceeds from bank loan
                       12,662,000 10,718,000                                                                            
          payments on bank loan
                       -2,799,000                                                                            
          proceeds from issuance of tongmei's common stock to redeemable noncontrolling interests, net of costs
                                                                                                    
          consideration payable to repurchase subsidiary shares from noncontrolling interests, included in accrued liabilities
                           3,730,000     -150,849   -1,190,808                                                              
          bank loan proceed paid directly to a third-party vendor, included in accounts payable
                                                                                                    
          effect of exchange rate changes on cash and cash equivalents
                        12,000 -209,449 -111,000 486,000 -165,000 -241,395 420,000 -35,000 -140,000 450,850 -474,000 -117,000 140,000 605,570 -373,000 -516,000 283,000 156,000 34,000 124,000 91,000 -934,000 -57,000 -526,000 105,000 -519,000 -640,000 -3,000 62,000 4,000 23,000 -111,000 207,000 87,000 162,000 87,000 28,000 -28,000 19,000 117,000 97,000 291,000 173,000 168,000 253,000 274,000    59,000 1,000 9,000 8,000 239,000 273,000 173,000 -20,000 55,000                   
          net decrease in cash and cash equivalents
                        -7,269,000  -9,175,000 -8,423,000 -11,396,000                           -2,201,000                                            -12,469,000 
          cash and cash equivalents at the end of the period
                        29,494,000 -43,571,237 -9,175,000        -895,000 7,672,000 21,060,000  -11,663,000 -9,491,000 39,189,000  -8,405,000 -29,000 56,512,000 6,491,000 3,546,000 1,048,000 25,067,000  -2,455,000 -4,645,000 33,285,000 -514,000 3,547,000 22,760,000  5,764,000 -3,833,000 25,792,000  4,222,000 125,000 31,156,000  3,323,000 -2,195,000 23,273,000  2,999,000 -213,000 20,607,000 20,607,000 3,629,000 906,000 11,507,000 -7,715,000 -3,933,000 23,225,000 1,651,000 352,000 15,064,000 5,529,000 -466,000 -1,800,000 12,853,000 2,887,000 -527,000 531,000 14,581,000 -4,103,000 1,437,000 -1,870,000 16,653,000 2,853,000 7,889,000 -4,738,000 18,335,000 1,150,000 -12,469,000 
          impairment charge on equity investee
                                 -1,066,932 1,068,000     313,000                                                        
          provision for doubtful accounts
                             -86,817 44,000                   61,000 150,000 8,000 1,000 242,000 323,000                                           
          gain from deconsolidation of a subsidiary
                                 174,825 -175,000                                                                
          equity in loss of unconsolidated joint ventures
                         3,669,591 -1,061,000                                                                          
          proceeds from sale of previously consolidated subsidiary shares
                                 -365,634 366,000                                                                
          consideration paid to repurchase subsidiary shares from noncontrolling interests
                                 261,738                                                                  
          proceeds from short-term loan from noncontrolling interest
                                                                                                    
          dividends paid by joint ventures to their minority shareholders
                             86,762           -465,000 -39,000                                                    
          net increase in cash and cash equivalents
                             4,553,710 -4,131,000 6,454,000 -6,831,000 -11,300,634 -895,000 7,672,000 4,534,000 26,289,174 -11,663,000 -9,491,000 -5,163,000 -3,726,000 -8,405,000 -29,000 20,360,000 6,491,000 3,546,000 1,048,000 192,000 -1,310,000 -2,455,000 -4,645,000 4,471,000 -514,000   -2,762,000 5,764,000 -3,833,000 -4,842,000 -4,869,000 4,222,000 125,000 5,000,000 1,755,000 3,323,000 -2,195,000 -451,000 331,000 2,999,000 -213,000 3,673,000 3,673,000     -3,933,000 4,845,000          531,000 2,464,000    -7,686,000 2,853,000 7,889,000 -4,738,000 4,538,000   
          reduction of noncontrolling interests in excess (deficit) of total consideration paid and payable in connection with the repurchase of subsidiary shares from noncontrolling interests
                                 73,926                                                                   
          proceeds from short-term loan
                             -3,369,599 2,985,000 4,000 391,000 -5,754,186                                                                   
          proceeds from long-term loan, related party
                                                                                                    
          payments on short-term loan
                             5,795,004                                                                       
          costs related to issuance of tongmei's common stock to redeemable noncontrolling interests, net of proceeds
                                                                                                    
          proceeds from issuance of tongmei's common stock to redeemable noncontrolling interests, net of issuance costs
                           -453,000 730,000                                                                        
          loss from equity method investments
                            -1,111,000 -243,111 -45,000 168,000 120,000 -756,017 204,000 -8,000 561,000 -19,920 -6,000 -307,000 334,000 307,000 266,000 188,000 620,000 558,000 581,000 400,000 456,000                                                    
          cash and cash equivalents at the end of the year
                            61,206,000 -22,311,398 -4,131,000 6,454,000 20,061,000                                                                    
          return on equity method investments
                                 -361,638                                                                  
          accrued liabilities*
                                                                                                    
          proceeds from sale of equipment
                                     -10,901                                                            
          proceeds from issuance of tongmei's common stock to redeemable noncontrolling interests net of issuance cost
                                                                                                    
          consideration payable in connection with construction, included in accrued liabilities
                                                                                                    
          realized gain on sale of available-for-sale securities
                                         -77,000                                                        
          accrued liabilities *
                                                                                                    
          purchases of available-for-sale securities
                                 8,716,275 -6,211,000   9,926,063 2,000 -9,938,000 -3,928,000 -2,330,000 -2,047,000 -21,716,000       -4,360,000 -4,304,000  -3,000 -3,725,000   -962,000 -12,410,000    -3,079,000                                     
          proceeds from sales and maturities of available-for-sale securities
                                 -20,965,811 4,348,000 6,840,000 9,800,000 -18,570,450 720,000 3,190,000 14,680,000 1,440,000 3,140,000 1,200,000 8,970,000       1,475,000 10,277,000                                                
          repayment of related party notes receivable
                                         61,000 55,000                                                          
          cash and cash equivalents at the beginning of the period
                                  16,526,000  44,352,000  36,152,000 24,875,000  28,814,000 24,961,000  30,634,000  26,156,000  23,724,000  16,934,000 16,934,000 13,566,000 18,380,000 16,116,000 17,472,000 12,117,000 24,339,000 13,797,000 
          reduction of noncontrolling interests in excess (deficit) of total consideration paid and payable in connection with the repurchase of subsidiaries shares from noncontrolling interests
                                                                                                    
          proceeds from sale of subsidiary shares to noncontrolling interests, net of portion allocated to noncontrolling interests
                                                                                                    
          considerations paid in cash to repurchase subsidiary shares from noncontrolling interests
                                     414,585 -252,000                                                              
          reduction of noncontrolling interests in excess of total consideration paid and payable in connection with the repurchase of subsidiaries shares from noncontrolling interests
                                     -186,813 -9,000                                                              
          consideration payable in connection with constructions, included in accrued liabilities
                                                                                                    
          dividends received from equity method investments
                                                 19,000                                                   
          repurchase of the company’s common stock, including commission
                                                 -33,000   -617,000    -429,000                                            
          purchases of equipment
                                          -14,726,000 -1,563,000 -268,000 -528,000 -505,000 -900,000 -795,000 -642,000                                                   
          realized gain on sale of available for sale securities
                                             -84,000                                                      
          purchases of available for sale securities
                                             -1,152,000 -2,909,000 -3,737,000 -4,138,000 257,000       -1,000    -3,891,000 -3,707,000   -2,120,000 -1,829,000 -10,002,000                                 
          proceeds from sales and maturities of available for sale securities
                                             1,200,000 4,018,000 3,128,000 5,170,000                                                   
          income taxes paid
                                                                                                    
          realized gain on sale of investments
                                                -181,000 -492,000 -367,000               4,000                                 
          gain on sale of cost method investment
                                                                                                  
          income from equity method investments
                                                                                                    
          repayment of related party note receivable
                                                                                                    
          dividends paid by joint ventures to their minority share holders
                                                 -10,000                                                   
          gain on equity investments
                                                                                                    
          changes in assets and liabilities:
                                                                                                    
          loss on disposal of property, plant and equipment
                                                   9,000   -5,000 -2,000   19,000 147,000 29,000 36,000 -35,000   4,000 1,000 1,000  3,000 1,000       26,000 22,000 19,000 48,000 -1,000 74,000             
          loss on equity investments
                                                                                                    
          proceeds from sales of property, plant and equipment
                                                   2,000                               2,000 159,000              
          repurchases of the company’s common stock, including commission
                                                                                                    
          dividends paid by consolidated joint ventures
                                                                                                    
          gain on sale of investments
                                                                                                    
          gain on disposal of property, plant and equipment
                                                                                                   
          proceeds from sale of property, plant and equipment
                                                                     6,000 4,000 4,000                       5,172,000   
          dividends paid by joint ventures
                                                       -599,000 -1,198,000 -532,000     -1,636,000                                 
          net cash from in financing activities
                                                                                                    
          proceeds from maturities of available-for-sale securities
                                                      742,000 2,180,000   918,000 8,130,000    2,700,000                                     
          repurchases of the company’s common stock
                                                                                                    
          proceeds from sales of property, plan and equipment
                                                       5,000                                             
          adjustments to reconcile net income to net cash from operations:
                                                                                                    
          stock‑based compensation
                                                                                                    
          realized loss on sale of investments
                                                                             19,000 10,000                   
          proceeds from disposal of property, plant and equipment
                                                                                                    
          investments in joint ventures
                                                                -378,000 3,000                                   
          repayment from (loans to) related parties
                                                                                                    
          proceeds from maturities of available for sale securities
                                                                                                    
          loans to related parties
                                                                                                    
          long-term debt payments
                                                                                             -793,000       
          interest paid
                                                                                                    
          proceeds from sale of available for sale securities
                                                                                                    
          loan to related party
                                                                                                    
          proceeds from available for sale securities
                                                                  1,740,000 11,923,000 240,000 8,850,000                               
          amortization of marketable securities premium/discount
                                                                                      4,000 36,000 65,000 87,000 100,000 84,000 82,000 41,000       
          restructuring charge
                                                                                                   
          decrease in restricted deposits
                                                                         13,000 3,400,000 150,000 150,000 150,000 150,000 150,000     150,000              
          payment on line of credit
                                                                                                    
          adjustments to reconcile net income to cash from operations:
                                                                                                    
          impairment on assets held for sale
                                                                              83,000                      
          proceeds from sale of assets held for sale
                                                                            5,057,000                    
          proceeds from line of credit
                                                                                                    
          supplemental non-cash investing and financing activities:
                                                                                                    
          property, plant and equipment acquired through the issuance of debt
                                                                                                    
          depreciation
                                                                     711,000 659,000 752,000 752,000 739,000 770,000 800,000 527,000 489,000 478,000 378,000 365,000 321,000 260,000 604,000 923,000 838,000 871,000 806,000 756,000 1,312,000 1,222,000 1,210,000 1,223,000 1,214,000       
          realized loss on available for sale securities
                                                                                                    
          dividends paid
                                                                                                    
          accretion of marketable securities premium
                                                                                                    
          realized loss on available for sale investments
                                                                                                    
          purchases of available for sale investments
                                                                                                    
          proceeds from sale of available for sale investments
                                                                       6,120,000 6,120,000                            
          realized gain on available for sale investments
                                                                                                    
          purchases of marketable securities
                                                                                                    
          proceeds from sale of marketable securities
                                                                           10,000,000 3,167,000 11,328,000 12,597,000 8,851,000 3,060,000       5,634,000 8,354,000 5,850,000 2,800,000 4,500,000 5,922,000       
          proceeds from issuance of common stock
                                                                         8,000   22,000 81,000 68,000 548,000 134,000 3,708,000                   
          net income attributable to axt, inc.
                                                                          -1,280,000 -5,516,000                         
          non-cash restructuring charge
                                                                           507,000           360,000 14,000 237,000 125,000 73,000 158,000         
          prepaid expenses
                                                                           833,000      380,000     155,000 482,000      -718,000       
          long-term debt proceeds
                                                                              274,000                      
          accretion of marketable securities premium/discount
                                                                                                    
          impairment (recovery) on assets held for sale
                                                                                                   
          income taxes
                                                                             289,000 221,000       471,000  41,000 -14,000 104,000           
          realized loss (gain) on sale of investments
                                                                                                    
          impairment (recovery of impairment) on assets held for sale
                                                                                                    
          income taxes payable
                                                                               102,000                     
          net cash (used in)/ provided by investing activities
                                                                                                    
          net cash provided by financing activities
                                                                                                    
          net increase (decrease) in cash and cash equivalents
                                                                                                    
          recovery of impairment on assets held for sale
                                                                                                    
          impairment of investments
                                                                                                    
          impairment of property, plant and equipment
                                                                                                   
          gain on disposal of discontinued operations
                                                                                                    
          decrease (increase) in restricted deposits
                                                                                                    
          repurchase of common stock
                                                                                                    
          proceeds from long-term debt borrowings
                                                                                                    
          adjustments to reconcile net loss to net cash used in operating activities:
                                                                                                    
          amortization of investments premium/discount
                                                                                                    
          accrued liabilities and restructuring
                                                                                                    
          purchases of investments
                                                                                                    
          proceeds from sale of investments
                                                                                     3,382,000               
          decrease in restricted cash
                                                                                   150,000                 
          proceeds from
                                                                                                    
          issuance of common stock
                                                                                   230,000 232,000 66,000  60,000  77,000 39,000 154,000       
          net cash used in operating activities
                                                                                                    
          proceeds from assets held for sale
                                                                                                    
          net cash provided by investing activities
                                                                                                    
          net cash used in financing activities
                                                                                                    
          adjustments to reconcile net loss to net cash from operations:
                                                                                                    
          stock based compensation
                                                                                     257,000               
          adjustments to reconcile net loss to cash (used in) provided by operations:
                                                                                                    
          loss on disposal on discontinued operations
                                                                                                    
          net cash (used in) provided by operating activities
                                                                                                    
          proceeds from sale of property and equipment from discontinued opto-electronics business
                                                                                                    
          net cash from (used in) investing activities
                                                                                                    
          capital lease payments
                                                                                                    
          income tax refund
                                                                                                    
          asset impairment charge
                                                                                                    
          disposal of property, plant and equipment
                                                                                         175,000           
          deferred income taxes
                                                                                                    
          proceeds from sale of property
                                                                                                    
          net cash (used in) provided by investing activities
                                                                                                    
          non-cash activity:
                                                                                                    
          purchases of property, plant and equipment through financing
                                                                                                    
          loss on disposal
                                                                                                    
          decrease (increase) in restricted cash
                                                                                           3,488,000         
          capital leases payments
                                                                                                    
          impairment write-down on investments
                                                                                                    
          adjustments to reconcile net loss to cash from operations:
                                                                                                    
          investment in marketable securities
                                                                                             -11,125,000       
          investment in other assets
                                                                                                    
          proceeds from sale of property located in fremont, california
                                                                                                   
          increase in restricted cash
                                                                                              -1,806,000 -389,000     
          non cash activity:
                                                                                                    
          net loss:
                                                                                               -2,563,000     
          proceeds from sale of property, plant and equipment from discontinued opto-electronics business
                                                                                                    
          purchase of pp&e through financing
                                                                                                    
          net income:
                                                                                                 -4,317,000   
          proceeds from sale of property plant and equipment
                                                                                                    
          exchange of finisar shares for demeter shares
                                                                                                    
          purchase of property, plant and equipment through financing
                                                                                                   
          sale of investments
                                                                                                    
          purchase of pp&e through capital leases
                                                                                                    
          retirements of property, plant and equipment