7Baggers

Altair Engineering Inc
(NASDAQ:ALTR) 

ALTR stock logo

Altair Engineering Inc., together with its subsidiaries, provides software and cloud solutions in the areas of simulation, high-performance computing, data analytics, and artificial intelligence worldwide. The company operates through two segments, Software and Client Engineering Services. Its softw...

Founded: 1985
Full Time Employees: 2,950
Sector: Technology
Industry: Software-Infrastructure
Technology
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• Market Cap:
• Exchange:
• Shs Outstanding:
• Employees:
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At a glance:
Bull Thesis:
Bear Thesis:
Main Competitors:
Moat:
Income Statements:
Quarterly
Annual
    Unit: USD2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 
                                  
      revenue
    		                              
      yoy
    		                              
      qoq
    		                              
      license
    		131,943,000 92,939,000 92,699,000 117,707,000 113,172,000 79,825,000 87,738,000 112,409,000 107,418,000 67,245,000 82,688,000 106,169,000 94,178,000 67,603,000 66,632,000 96,395,000 76,381,000 55,023,000 51,018,000 77,543,000 64,194,000 46,853,000 56,653,000 76,621,000       
      maintenance and other services
    		47,433,000 45,733,000 42,724,000 40,722,000 42,761,000 39,252,000 37,583,000 37,234,000 37,535,000 36,520,000 34,205,000 34,728,000 28,180,000 34,686,000 32,926,000 33,146,000 37,244,000 32,787,000 30,815,000 30,900,000 36,993,000 30,963,000 27,755,000 26,670,000       
      total software
    		179,376,000 138,672,000 135,423,000 158,429,000 155,933,000 119,077,000 125,321,000 149,643,000 144,953,000 103,765,000 116,893,000 140,897,000 122,358,000 102,289,000 99,558,000 129,541,000 113,625,000 87,810,000 81,833,000 108,443,000 101,187,000 77,816,000 84,408,000 103,291,000 65,231,000 79,994,000 81,520,000 77,616,000 77,560,000 71,782,000 
      engineering services and other
    		13,255,000 12,778,000 13,372,000 14,483,000                           
      total revenue
    		192,631,000 151,450,000 148,795,000 172,912,000 171,503,000 134,003,000 141,161,000 166,034,000 160,433,000 119,351,000 132,656,000 159,781,000 140,797,000 121,307,000 119,912,000 150,163,000 133,441,000 106,456,000 98,561,000 131,463,000 123,877,000 100,406,000 106,773,000 127,859,000 115,211,000 93,871,000 95,566,000 91,731,000 89,867,000 84,938,000 
      cost of revenue
    		                              
      total cost of revenue
    		33,379,000 30,015,000 30,516,000 30,893,000 29,173,000 29,086,000 30,797,000 32,735,000 33,854,000 27,909,000 29,523,000 31,603,000 32,797,000 31,501,000 31,946,000 33,422,000 32,691,000 29,036,000 25,081,000 34,497,000 36,950,000 31,741,000 31,023,000 32,885,000 30,271,000 27,204,000 29,456,000 29,042,000 26,617,000 26,302,000 
      gross profit
    		159,252,000 121,435,000 118,279,000 142,019,000 142,330,000 104,917,000 110,364,000 133,299,000 126,579,000 91,442,000 103,133,000 128,178,000 108,000,000 89,806,000 87,966,000 116,741,000 100,750,000 77,420,000 73,480,000 96,966,000 86,927,000 68,665,000 75,750,000 94,974,000 84,940,000 66,667,000 66,110,000 62,689,000 63,250,000 58,636,000 
      yoy
    		11.89% 15.74% 7.17% 6.54% 12.44% 14.74% 7.01% 4.00% 17.20% 1.82% 17.24% 9.80% 7.20% 16.00% 19.71% 20.39% 15.90% 12.75% -3.00% 2.10% 2.34% 3.00% 14.58% 51.50% 34.29% 13.70%     
      qoq
    		31.14% 2.67% -16.72% -0.22% 35.66% -4.94% -17.21% 5.31% 38.43% -11.34% -19.54% 18.68% 20.26% 2.09% -24.65% 15.87% 30.13% 5.36% -24.22% 11.55% 26.60% -9.35% -20.24% 11.81% 27.41% 0.84% 5.46% -0.89% 7.87%  
      gross margin %
    		Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% 
      operating expenses:
    		                              
      research and development
    		57,147,000 56,111,000 55,570,000 52,333,000 52,519,000 51,598,000 55,277,000 53,251,000 47,511,000 48,781,000 46,477,000 43,094,000 38,177,000 35,839,000 38,757,000 38,276,000 34,966,000 30,678,000 28,970,000 31,467,000 30,498,000 29,667,000 29,829,000 27,516,000 25,844,000 24,301,000 24,744,000 22,703,000 24,036,000 27,590,000 
      sales and marketing
    		47,812,000 45,559,000 46,475,000 44,434,000 43,595,000 44,069,000 44,982,000 43,492,000 41,203,000 39,244,000 39,116,000 35,682,000 38,182,000 30,589,000 31,909,000 32,070,000 30,537,000 26,998,000 25,806,000 28,099,000 27,589,000 25,790,000 26,221,000 26,451,000 21,842,000 19,275,000 20,183,000 18,977,000 21,275,000 22,345,000 
      general and administrative
    		35,595,000 17,500,000 19,294,000 17,761,000 17,096,000 17,218,000 18,622,000 17,951,000 24,993,000 24,677,000 24,367,000 23,569,000 23,517,000 22,196,000 21,861,000 23,926,000 22,933,000 20,905,000 20,248,000 22,346,000 21,292,000 20,706,000 19,851,000 20,329,000 28,115,000 17,234,000 17,412,000 16,990,000 21,514,000 29,175,000 
      amortization of intangible assets
    		8,709,000 9,246,000 7,629,000 7,438,000 7,708,000 7,704,000 7,625,000 7,814,000 8,828,000 6,571,000 6,208,000 5,903,000 4,433,000 4,432,000 4,615,000 4,877,000 4,986,000 3,858,000 3,692,000 3,840,000 3,769,000 3,545,000 3,600,000 3,528,000 2,074,000 1,739,000 1,986,000 1,940,000 2,161,000 1,189,000 
      other operating income
    		-976,000 -2,669,000 -786,000 -882,000 -1,178,000 -4,408,000 127,000 5,605,000 -572,000 -2,835,000 -5,767,000 -781,000 -956,000 -1,324,000 -585,000 -617,000 5,000 -1,596,000 -944,000 -891,000 -370,000 -536,000 -549,000 -617,000 -2,164,000 -4,850,000 -392,000 -2,191,000 -2,555,000 -735,000 
      total operating expenses
    		148,287,000 125,747,000 128,182,000 121,084,000 119,740,000 116,181,000 126,633,000 128,113,000 121,963,000 116,438,000 110,401,000 107,467,000 103,353,000 91,732,000 96,557,000 98,532,000 93,427,000 80,843,000 77,772,000 84,861,000 82,778,000 79,172,000 78,952,000 77,207,000 75,711,000 57,699,000 63,933,000 58,419,000 66,431,000 79,564,000 
      operating income
    		10,965,000 -4,312,000 -9,903,000 20,935,000 22,590,000 -11,264,000 -16,269,000 5,186,000 4,616,000 -24,996,000 -7,268,000 20,711,000 4,647,000 -1,926,000 -8,591,000 18,209,000 7,323,000 -3,423,000 -4,292,000 12,105,000 4,149,000 -10,507,000 -3,202,000 17,767,000 9,229,000 8,968,000 2,177,000 4,270,000 -3,181,000 -20,928,000 
      yoy
    		-51.46% -61.72% -39.13% 303.68% 389.38% -54.94% 123.84% -74.96% -0.67% 1197.82% -15.40% 13.74% -36.54% -43.73% 100.16% 50.43% 76.50% -67.42% 34.04% -31.87% -55.04% -217.16% -247.08% 316.09% -390.13% -142.85%     
      qoq
    		-354.29% -56.46% -147.30% -7.33% -300.55% -30.76% -413.71% 12.35% -118.47% 243.92% -135.09% 345.69% -341.28% -77.58% -147.18% 148.65% -313.94% -20.25% -135.46% 191.76% -139.49% 228.14% -118.02% 92.51% 2.91% 311.94% -49.02% -234.23% -84.80%  
      operating margin %
    		Infinity% -Infinity% -Infinity% Infinity% Infinity% -Infinity% -Infinity% Infinity% Infinity% -Infinity% -Infinity% Infinity% Infinity% -Infinity% -Infinity% Infinity% Infinity% -Infinity% -Infinity% Infinity% Infinity% -Infinity% -Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% -Infinity% -Infinity% 
      interest expense
    		1,339,000 1,317,000 1,604,000 1,576,000 1,533,000 1,529,000 1,528,000 1,526,000 1,526,000 1,566,000 700,000 585,000 3,067,000 3,037,000 2,988,000 2,973,000 3,008,000 2,934,000 2,843,000 2,813,000 2,785,000 2,726,000 590,000 270,000 108,000 31,000 45,000 16,000 367,000 634,000 
      other income
    		-316,000 -10,758,000 -5,750,000 -3,957,000 -8,794,000 -1,890,000 -4,195,000 -3,613,000 -9,183,000 2,107,000 21,907,000 2,068,000 -1,105,000 124,000 708,000 835,000 -65,000 -782,000 320,000 -1,390,000 -849,000 -588,000 -505,000 390,000 -534,000 -970,000 -176,000 -900,000 156,000 52,000 
      income before income taxes
    		9,942,000 5,129,000 -5,757,000 23,316,000 29,851,000 -10,903,000 -13,602,000 7,273,000 12,273,000 -28,669,000 -29,875,000 18,058,000 2,685,000 -5,087,000 -12,287,000 14,401,000 4,380,000 -5,575,000 -7,455,000 10,682,000 2,213,000 -12,645,000 -3,287,000 17,107,000 9,655,000 9,907,000 2,308,000 5,154,000   
      income tax benefit
    		2,377,250 3,350,000                 2,768,000        795,000 1,234,000 1,588,250 8,012,000 
      net income
    		996,000 1,779,000 -5,147,000 16,547,000 19,675,000 -4,362,000 -22,280,000 -1,959,000 12,065,000 -33,248,000 -33,774,000 11,528,000 -1,397,000 -8,109,000 -13,648,000 14,360,000 2,198,000 -8,505,000 -10,223,000 6,030,000 -1,502,000 -15,939,000 -3,120,000 13,019,000 975,000 7,307,000 1,513,000 3,920,000 -60,347,000 -29,626,000 
      yoy
    		-94.94% -140.78% -76.90% -944.67% 63.08% -86.88% -34.03% -116.99% -963.64% 310.01% 147.46% -19.72% -163.56% -4.66% 33.50% 138.14% -246.34% -46.64% 227.66% -53.68% -254.05% -318.13% -306.21% 232.12% -101.62% -124.66%     
      qoq
    		-44.01% -134.56% -131.11% -15.90% -551.05% -80.42% 1037.31% -116.24% -136.29% -1.56% -392.97% -925.20% -82.77% -40.58% -195.04% 553.32% -125.84% -16.81% -269.54% -501.46% -90.58% 410.87% -123.96% 1235.28% -86.66% 382.95% -61.40% -106.50% 103.70%  
      net income margin %
    		Infinity% Infinity% -Infinity% Infinity% Infinity% -Infinity% -Infinity% -Infinity% Infinity% -Infinity% -Infinity% Infinity% -Infinity% -Infinity% -Infinity% Infinity% Infinity% -Infinity% -Infinity% Infinity% -Infinity% -Infinity% -Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% -Infinity% -Infinity% 
      earnings per share, basic
    		                              
      earnings per share
    		0.04 0.02 -0.06                            
      weighted-average shares
    		84,085 84,835 83,607                            
      earnings per share, diluted
    		                              
      income tax (benefit) expense
    		  -610,000  2,842,250 -6,541,000                 -167,000        
      income tax expense
    		   6,769,000   8,678,000 9,232,000 208,000 4,579,000 3,899,000 6,530,000 4,082,000 3,022,000 1,361,000 41,000 2,182,000 2,930,000  4,652,000 3,715,000 3,294,000  4,088,000 8,680,000 2,600,000     
      income per share:
    		                              
      net income per share
    		   0.2 0.25 -0.05 -0.28 -0.02 0.15 -0.42 -0.43 0.15 -0.02 -0.11 -0.18 0.19 0.03 -0.12 -0.14 0.08 -0.03 -0.22 -0.04 0.18 0.01 0.1 0.02 0.06 -1.11 -0.59 
      weighted-average shares outstanding:
    		                              
      weighted-average number of shares used in computing net income per share, basic
    		   82,587    80,191  79,207 78,948 79,462  75,750 75,263 74,651 73,241  72,999 72,623 71,544 71,770 71,373 70,786 67,468 70,001 65,580 63,638 52,466 50,606 
      weighted-average number of shares used in computing net income per share, diluted
    		   89,806    80,191  79,207 78,948 87,261  75,750 75,263 79,295 73,241  72,999 77,004 71,544 71,770 71,373 76,720 74,878 76,709 73,391 72,390 52,466 50,606 
      software related services
    		    7,751,000 6,517,000 6,664,000 7,100,000 7,518,000 6,706,000 7,376,000 9,061,000 8,594,000 7,650,000 7,481,000 8,098,000 7,906,000 6,170,000 5,444,000 6,934,000 8,941,000 7,956,000 7,907,000 9,772,000 10,073,000 8,692,000 8,707,000 9,473,000 9,648,000 8,574,000 
      total software and related services
    		    163,684,000 125,594,000 131,985,000 156,743,000 152,471,000 110,471,000 124,269,000 149,958,000 130,952,000 109,939,000 107,039,000 137,639,000 121,531,000 93,980,000 87,277,000 115,377,000 110,128,000 85,772,000 92,315,000 113,063,000       
      client engineering services
    		    6,561,000 7,126,000 8,034,000 7,776,000 6,469,000 7,355,000 7,047,000 8,012,000 8,277,000 10,060,000 10,268,000 10,677,000 9,934,000 10,868,000 9,640,000 13,878,000 11,722,000 12,803,000 12,412,000 12,050,000 11,200,000 12,155,000 12,417,000 12,080,000 10,439,000 11,477,000 
      other
    		    1,258,000 1,283,000 1,142,000 1,515,000 1,493,000 1,525,000 1,340,000 1,811,000 1,568,000 1,308,000 2,605,000 1,847,000 1,976,000 1,608,000 1,644,000 2,208,000 2,027,000 1,831,000 2,046,000 2,746,000 1,835,000 1,722,000 1,629,000 2,035,000 1,868,000 1,679,000 
      loss per share:
    		                              
      weighted-average number of shares used in computing net income per share, basic and diluted
    		    80,596 80,431 79,986  79,472    76,179     73,311             
      net (loss) imcome per share attributable to common stockholders, diluted
    		              -0.18                
      software
    		                        53,064,500 71,302,000 72,813,000 68,143,000 67,912,000 63,208,000 
      income before taxes
    		                            -8,176,750 -21,614,000 
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 
                                    
        assets
      		                              
        current assets
      		                              
        cash and cash equivalents
      		561,898,000 513,371,000 507,008,000 557,605,000 467,459,000 431,188,000 418,338,000 378,377,000 316,146,000 311,853,000 416,137,000 405,578,000 413,743,000 455,858,000 260,098,000 243,364,000 241,221,000 245,364,000 250,540,000 247,145,000 223,117,000 246,937,000 251,828,000 39,771,000 35,345,000 197,413,000 199,230,000 63,196,000 39,213,000 16,667,000 
        accounts receivable
      		173,509,000 121,345,000 126,560,000 127,870,000 190,461,000 121,855,000 124,260,000 130,636,000 170,279,000 119,921,000 103,483,000 112,444,000 137,561,000 88,701,000 91,570,000 107,112,000 117,878,000 88,514,000 79,185,000 87,665,000 104,984,000 84,062,000 85,758,000 88,358,000 96,803,000 69,046,000 73,793,000 83,350,000 86,635,000  
        income tax receivable
      		21,513,000 20,794,000 17,682,000 18,898,000 16,650,000 12,402,000 14,505,000 11,226,000 11,259,000 10,465,000 11,412,000 12,185,000 9,388,000 8,929,000 7,949,000 5,985,000 6,736,000 7,091,000 5,760,000 5,884,000 7,264,000 11,551,000 8,515,000 8,137,000 4,431,000 9,841,000 7,260,000 6,898,000 6,054,000 6,868,000 
        prepaid expenses and other current assets
      		28,058,000 31,489,000 28,582,000 26,026,000 26,053,000 26,561,000 29,678,000 28,363,000 29,142,000 23,492,000 23,282,000 25,467,000 27,529,000 26,017,000 23,030,000 22,295,000 21,100,000 18,834,000 16,469,000 16,777,000 17,092,000 18,398,000 18,262,000 15,976,000 15,491,000 12,149,000 13,290,000 13,148,000 10,006,000 10,492,000 
        total current assets
      		784,978,000 686,999,000 679,832,000 730,399,000 700,623,000 592,006,000 586,781,000 548,602,000 526,826,000 465,731,000 554,314,000 555,674,000 588,221,000 579,505,000 382,647,000 378,756,000 386,935,000 359,803,000 351,954,000 357,471,000 352,457,000 360,948,000 364,363,000 155,631,000 154,034,000 289,683,000 295,359,000 167,643,000 143,888,000 99,354,000 
        property and equipment
      		41,008,000 40,908,000 38,463,000 38,837,000 39,803,000 38,167,000 39,107,000 38,260,000 37,517,000 38,938,000 39,370,000 40,188,000 40,478,000 38,711,000 39,610,000 39,143,000 36,332,000 34,401,000 34,456,000 35,449,000 36,297,000 33,720,000 34,050,000 33,524,000 30,153,000 29,679,000 30,112,000 30,501,000 31,446,000  
        operating lease right of use assets
      		31,117,000 31,856,000 31,816,000 30,175,000 30,759,000 32,132,000 30,284,000 33,297,000 33,601,000 32,627,000 24,977,000 27,910,000 28,494,000 30,916,000 33,395,000 33,568,000 33,526,000 33,302,000 32,598,000 25,321,000 28,134,000 26,507,000 28,878,000 29,892,000       
        goodwill
      		462,459,000 476,209,000 459,070,000 454,953,000 458,125,000 452,822,000 453,093,000 451,170,000 449,048,000 455,211,000 385,989,000 379,320,000 370,178,000 268,888,000 262,963,000 262,090,000 264,481,000 270,651,000 233,486,000 229,795,000 233,683,000 210,500,000 212,087,000 210,714,000 210,532,000 62,905,000 63,263,000 63,771,000 62,706,000 68,891,000 
        other intangible assets
      		72,937,000 84,904,000 77,537,000 75,357,000 83,550,000 86,491,000 94,642,000 101,586,000 107,609,000 86,080,000 90,327,000 93,345,000 99,057,000 61,540,000 66,637,000 70,912,000 76,114,000 56,741,000 58,177,000 61,358,000 67,075,000 60,956,000 64,874,000 68,469,000 69,836,000 22,329,000 24,846,000 22,813,000 24,461,000  
        deferred tax assets
      		8,770,000 9,661,000 9,120,000 9,699,000 9,955,000 8,046,000 8,183,000 9,675,000 9,727,000 7,605,000 7,943,000 8,228,000 8,495,000 8,221,000 8,265,000 8,476,000 7,125,000 5,631,000 5,661,000 5,620,000 5,791,000 5,870,000 5,901,000 1,978,000 1,373,000 7,837,000 8,113,000 8,824,000 8,351,000 69,135,000 
        other long-term assets
      		44,378,000 47,331,000 40,119,000 40,491,000 40,678,000 42,327,000 43,717,000 43,582,000 40,410,000 38,736,000 25,588,000 29,025,000 28,352,000 26,702,000 26,699,000 24,968,000 25,389,000 19,174,000 20,514,000 19,640,000 19,708,000 18,199,000 19,567,000 18,658,000 17,288,000 15,580,000 16,077,000 17,270,000 17,019,000 18,843,000 
        total assets
      		1,445,647,000 1,377,868,000 1,335,957,000 1,379,911,000 1,363,493,000 1,251,991,000 1,255,807,000 1,226,172,000 1,204,738,000 1,124,928,000 1,128,508,000 1,133,690,000 1,163,275,000 1,014,483,000 820,216,000 817,913,000 829,902,000 779,703,000 736,846,000 734,654,000 743,145,000 716,700,000 729,720,000 518,866,000 483,216,000 428,013,000 437,770,000 310,822,000 287,871,000 301,494,000 
        liabilities and stockholders’ equity
      		                              
        current liabilities
      		                              
        accounts payable
      		7,316,000 3,607,000 4,002,000 6,522,000 8,995,000 5,159,000 4,682,000 6,014,000 10,434,000 6,235,000 4,962,000 6,061,000 6,647,000 4,900,000 6,515,000 6,671,000 8,594,000 5,413,000 4,780,000 5,625,000 8,585,000 8,286,000 6,462,000 6,569,000 8,357,000 5,592,000 5,957,000 5,650,000 4,880,000 3,987,000 
        accrued compensation and benefits
      		50,328,000 43,497,000 39,819,000 35,911,000 45,081,000 39,468,000 35,951,000 30,341,000 42,456,000 37,036,000 31,084,000 35,038,000 42,307,000 35,999,000 35,846,000 36,785,000 34,772,000 33,932,000 30,997,000 27,623,000 30,676,000 28,839,000 29,155,000 28,643,000 31,740,000 28,750,000 26,393,000 25,360,000 26,560,000 23,946,000 
        current portion of operating lease liabilities
      		7,876,000 8,212,000 8,057,000 8,330,000 8,825,000 9,209,000 9,557,000 9,939,000 10,396,000 9,996,000 9,433,000 9,948,000 9,933,000 10,342,000 10,770,000 10,471,000 10,331,000 10,062,000 9,369,000 8,635,000 9,141,000 8,891,000 9,412,000 9,464,000       
        other accrued expenses and current liabilities
      		56,058,000 40,267,000 41,508,000 43,820,000 48,398,000 50,917,000 66,044,000 58,673,000 56,371,000 50,686,000 49,444,000 56,978,000 122,226,000 24,721,000 27,810,000 32,238,000 30,982,000 25,606,000 27,411,000 35,760,000 28,603,000 27,426,000 27,979,000 31,910,000 26,347,000 20,222,000 20,443,000 21,486,000 21,744,000 35,737,000 
        deferred revenue
      		139,085,000 114,525,000 123,439,000 120,554,000 131,356,000 110,843,000 121,853,000 114,423,000 113,081,000 94,523,000 92,141,000 96,529,000 93,160,000 75,138,000 81,343,000 81,737,000 85,691,000 74,045,000 73,061,000 72,567,000 75,431,000 69,377,000 67,587,000 66,030,000 59,765,000 136,991,000 147,261,000 152,663,000 130,122,000 117,969,000 
        current portion of convertible senior notes
      		227,106,000   81,617,000 81,455,000 81,319,000 81,161,000                        
        total current liabilities
      		487,769,000 210,108,000 216,825,000 296,754,000 324,110,000 296,915,000 319,248,000 300,394,000 232,738,000 198,476,000 187,064,000 430,741,000 473,978,000 347,896,000 356,210,000 359,390,000 200,754,000 149,488,000 146,074,000 150,640,000 152,866,000 143,256,000 141,067,000 143,069,000 127,758,000 192,786,000 210,286,000 218,679,000 197,463,000 191,786,000 
        convertible senior notes
      		 226,812,000 226,518,000 226,223,000 225,929,000 225,635,000 225,320,000     226,187,000 199,705,000 196,796,000 193,926,000 191,094,000               
        operating lease liabilities, net of current portion
      		24,141,000 24,484,000 24,568,000 22,508,000 22,625,000 23,373,000 21,337,000 23,989,000 24,065,000 23,466,000 16,340,000 18,847,000 19,550,000 21,610,000 23,785,000 24,319,000 24,323,000 24,395,000 24,352,000 17,796,000 20,174,000 18,831,000 20,722,000 21,744,000       
        deferred revenue, non-current
      		28,531,000 26,310,000 28,745,000 24,385,000 32,347,000 28,090,000 26,694,000 27,520,000 31,379,000 22,017,000 20,785,000 21,874,000 12,872,000 9,290,000 7,236,000 8,992,000 9,388,000 8,513,000 7,287,000 7,472,000 8,136,000 7,666,000 6,219,000 6,511,000 6,754,000 9,722,000 9,256,000 9,961,000 9,640,000  
        other long-term liabilities
      		48,017,000 53,254,000 47,995,000 47,113,000 47,151,000 43,860,000 42,993,000 42,325,000 41,216,000 40,282,000 41,471,000 43,019,000 42,894,000 32,641,000 32,856,000 25,141,000 27,414,000 21,123,000 19,990,000 19,472,000 26,672,000 25,630,000 26,362,000 27,811,000 28,153,000 13,036,000 13,474,000 14,179,000 17,647,000 16,402,000 
        total liabilities
      		588,458,000 540,968,000 544,651,000 616,983,000 652,162,000 617,873,000 635,592,000 619,267,000 635,002,000 589,399,000 570,336,000 514,481,000 549,294,000 411,437,000 420,087,000 418,100,000 450,532,000 419,464,000 381,112,000 376,157,000 386,086,000 371,007,000 367,527,000 214,821,000 194,082,000 216,214,000 233,706,000 243,345,000 224,928,000 361,698,000 
        commitments and contingencies
      		                              
        stockholders’ equity
      		                              
        preferred stock (0.0001 par value), authorized 45,000 shares, none issued or outstanding
      		                              
        common stock
      		                              
        class a common stock
      		6,000 5,000 5,000 5,000 5,000 5,000 5,000 5,000 5,000 5,000 5,000 5,000 5,000 5,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 4,000 3,000 2,000 1,000 
        class b common stock
      		3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 4,000 4,000 4,000 
        additional paid-in capital
      		1,010,789,000 971,835,000 939,691,000 904,180,000 864,135,000 816,551,000 790,184,000 753,184,000 721,307,000 715,736,000 687,338,000 698,045,000 724,226,000 711,082,000 495,824,000 484,584,000 474,669,000 464,803,000 456,307,000 449,870,000 446,633,000 436,197,000 433,902,000 381,159,000 379,832,000 370,402,000 369,579,000 232,576,000 232,156,000 49,347,000 
        accumulated deficit
      		-116,328,000 -117,324,000 -119,103,000 -113,956,000 -130,503,000 -150,178,000 -145,816,000 -123,536,000 -121,577,000 -133,642,000 -100,394,000 -66,620,000 -102,087,000 -100,690,000 -92,581,000 -78,933,000 -93,293,000 -95,491,000 -86,986,000 -76,763,000 -82,405,000 -80,903,000 -64,964,000 -68,986,000 -82,005,000 -153,759,000 -161,066,000 -162,579,000 -166,499,000 -106,152,000 
        accumulated other comprehensive loss
      		-37,281,000 -17,619,000 -29,290,000 -27,304,000 -22,309,000 -32,263,000 -24,161,000 -22,751,000 -30,002,000 -46,573,000 -28,780,000 -13,008,000 -8,950,000 -8,138,000 -3,905,000 -6,629,000 -2,797,000 -9,864,000 -14,378,000 -16,969,000 -9,528,000 -11,960,000 -9,104,000 -10,487,000 -11,052,000 -7,203,000 -6,808,000 -4,879,000 -5,072,000 -5,756,000 
        total stockholders’ equity
      		857,189,000 836,900,000 791,306,000 762,928,000 711,331,000 634,118,000 620,215,000 606,905,000 569,736,000 535,529,000 558,172,000 618,425,000 613,197,000 602,262,000 399,345,000 399,029,000 378,586,000 359,455,000 354,950,000 356,145,000 354,707,000 343,341,000 359,841,000 301,693,000 286,782,000 209,447,000 201,712,000 65,125,000 60,591,000  
        total liabilities and stockholders’ equity
      		1,445,647,000 1,377,868,000 1,335,957,000 1,379,911,000 1,363,493,000 1,251,991,000 1,255,807,000 1,226,172,000                       
        current assets:
      		                              
        current liabilities:
      		                              
        stockholders’ equity:
      		                              
        preferred stock (0.0001 par value), authorized 45,000 shares, none issued and outstanding
      		                              
        2024 convertible senior notes
      		       81,004,000                       
        2027 convertible senior notes
      		       225,039,000                       
        liabilities, mezzanine equity and stockholders’ equity
      		                              
        mezzanine equity
      		           784,000 784,000 784,000 784,000 784,000 784,000 784,000 784,000 2,352,000 2,352,000 2,352,000 2,352,000 2,352,000 2,352,000 2,352,000 2,352,000 2,352,000 2,352,000 2,352,000 
        total liabilities, mezzanine equity and stockholders’ equity
      		        1,204,738,000 1,124,928,000 1,128,508,000 1,133,690,000 1,163,275,000 1,014,483,000 820,216,000 817,913,000 829,902,000 779,703,000 736,846,000 734,654,000 743,145,000 716,700,000 729,720,000 518,866,000 483,216,000 428,013,000 437,770,000 310,822,000 287,871,000  
        current portion of long-term debt
      		               394,000 30,384,000 430,000 456,000 430,000 430,000 437,000 472,000 453,000 331,000 400,000 390,000 294,000 232,000 10,147,000 
        long-term debt
      		               258,000 188,653,000 215,945,000 183,409,000 180,777,000 178,238,000 175,624,000 173,157,000 15,686,000 31,417,000 670,000 690,000 526,000 178,000 81,939,000 
        inventory
      		                       3,389,000 1,964,000 1,234,000 1,786,000 1,051,000 1,980,000  
        obligations for acquisition of businesses
      		                        1,218,000 831,000 9,842,000 13,226,000 13,925,000  
        stock-based compensation awards
      		                             59,076,000 
        preferred stock (0.0001 par value), authorized 45,000 shares, none issued and outstanding as of december 31, 2017; none authorized, issued or outstanding as of december 31, 2016
      		                              
        total altair engineering inc. stockholders’ equity
      		                            60,591,000  
        noncontrolling interest
      		                              
        accounts receivable – net
      		                             63,530,000 
        inventory – net
      		                             1,797,000 
        property and equipment – net
      		                             29,892,000 
        other intangible assets – net
      		                             15,379,000 
        liabilities, mezzanine equity and stockholders’ deficit
      		                              
        deferred revenue – non-current
      		                             12,495,000 
        stockholders’ deficit:
      		                              
        total altair engineering inc. stockholders’ deficit
      		                             -62,556,000 
        total stockholders’ deficit
      		                             -62,556,000 
        total liabilities, mezzanine equity and stockholders’ deficit
      		                             301,494,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2024-12-31 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 
                                     
          operating activities:
        		                             
          net income
        		996,000 1,779,000 -5,147,000 16,547,000 19,675,000 -4,362,000 -22,280,000 -1,959,000 12,065,000 -33,248,000 -33,774,000 11,528,000 -1,397,000 -8,109,000 -13,648,000 14,360,000 2,198,000 -8,505,000 -10,223,000 6,030,000 -1,502,000 -15,939,000 -3,120,000 13,019,000 975,000 7,307,000 1,513,000 3,920,000 -60,347,000 
          adjustments to reconcile net income to net cash from operating activities:
        		                             
          depreciation and amortization
        		11,044,000 11,563,000 9,938,000 9,619,000 9,853,000 9,783,000 9,738,000 9,750,000 11,412,000 8,273,000 8,133,000 7,686,000 6,289,000 6,175,000 6,494,000 6,686,000 6,890,000 5,623,000 5,633,000 5,660,000 5,686,000 5,368,000 5,274,000 5,194,000 3,839,000 3,370,000 3,982,000 3,543,000 3,852,000 
          stock-based compensation expense
        		16,970,000 17,356,000 17,355,000 15,999,000 19,158,000 20,526,000 23,736,000 22,161,000 22,263,000 22,710,000 21,200,000 18,614,000 13,320,000 10,933,000 10,648,000 9,648,000 7,416,000 6,234,000 4,534,000 3,171,000 2,944,000 2,292,000 2,080,000 1,212,000 2,126,000 563,000 434,000 216,000 7,979,000 
          deferred income taxes
        		-593,000 253,000   -4,497,000 163,000   -4,168,000 68,000 3,000 -67,000 -992,000 -509,000 686,000 -687,000 -4,909,000 520,000 40,000 -6,001,000 -209,000 -38,000 -49,000 -654,000 1,063,000 -17,000 149,000 -432,000 57,364,000 
          gain on mark-to-market adjustment of contingent consideration
        		    1,212,000 -3,493,000   329,000 -2,178,000                    
          expense on repurchase of convertible senior notes
        		        0 0                    
          other
        		495,000 354,000 586,000 580,000 88,000 -419,000 -235,000 640,000 234,000 38,000 8,000 107,000 717,000 6,000 52,000 -18,000 105,000 10,000 -4,000 7,000  1,000 -21,000 4,000 -67,000 38,000 -147,000 -7,000 -121,000 
          changes in assets and liabilities:
        		                             
          accounts receivable
        		-58,356,000 11,556,000 1,115,000 60,245,000 -66,367,000 2,149,000 5,205,000 39,872,000 -48,034,000 -15,411,000 7,535,000 21,735,000 -42,415,000 1,918,000 16,084,000 8,768,000 -27,245,000 -7,051,000 8,801,000 14,463,000 -18,086,000 -221,000 2,728,000 7,678,000 -17,068,000 3,931,000 7,251,000 4,492,000 -22,413,000 
          prepaid expenses and other current assets
        		273,000 -4,248,000 -968,000 -2,679,000 -2,874,000 4,125,000 -5,147,000 1,981,000 -892,000 -150,000 2,194,000 -138,000 -1,414,000 -4,245,000 -2,562,000 -805,000 -1,076,000 -2,872,000 633,000 1,184,000 6,322,000 -3,766,000 803,000 -5,755,000 6,538,000 -3,407,000 -2,212,000 -715,000 1,128,000 
          other long-term assets
        		2,023,000 244,000 155,000 9,000 1,439,000 1,025,000 -572,000 -1,944,000 -282,000 -1,263,000 2,258,000 2,139,000 -1,664,000 49,000 -1,439,000 -3,628,000 -5,394,000 1,827,000 -639,000 -321,000 -1,148,000 857,000 -784,000 -1,516,000 -1,696,000 314,000 -397,000 119,000 -264,000 
          accounts payable
        		3,289,000 -1,034,000 -2,715,000 -1,667,000 3,616,000 35,000 -167,000 -5,362,000 4,041,000 1,800,000 -1,768,000 -302,000 -1,425,000 -1,465,000 -200,000 -767,000 1,482,000 520,000 -840,000 -3,001,000 -6,000 1,767,000 -395,000 -1,792,000 851,000 461,000 -175,000 510,000 496,000 
          accrued compensation and benefits
        		8,990,000 2,094,000 4,432,000 -8,503,000 4,509,000 3,865,000 5,692,000 -12,283,000 3,919,000 6,103,000 -2,846,000 -6,896,000 7,280,000 -1,067,000 -1,078,000 2,626,000 711,000 777,000 3,078,000 -2,581,000 879,000 344,000 360,000 -2,815,000 3,028,000 2,577,000 1,633,000 -1,560,000 2,271,000 
          other accrued expenses and current liabilities
        		20,052,000 -9,427,000 -2,635,000 -199,000 13,594,000 -9,383,000 2,842,000 2,015,000 -10,765,000 12,950,000 111,000 -61,759,000 5,882,000 -2,516,000 2,816,000 183,000 11,618,000 -5,978,000 -8,449,000 8,580,000 -1,597,000 223,000 -2,206,000 4,093,000 -2,041,000 -130,000 -529,000 -3,967,000 85,000 
          deferred revenue
        		32,060,000 -15,943,000 6,764,000 -16,646,000 21,775,000 -8,056,000 7,292,000 -2,678,000 22,635,000 8,231,000 -2,593,000 12,673,000 18,749,000 -3,305,000 -2,523,000 -2,810,000 10,732,000 -137,000 -186,000 -2,129,000 5,351,000 4,335,000 1,499,000 6,241,000 -1,720,000 -8,148,000 -1,082,000 20,505,000 8,243,000 
          net cash from operating activities
        		37,530,000 14,547,000 28,557,000 73,450,000 21,651,000 16,427,000 30,030,000 59,199,000 13,036,000 8,493,000 12,255,000 5,786,000 6,029,000 872,000 18,151,000 36,571,000 5,503,000 -6,022,000 5,365,000 28,036,000 1,388,000 -1,863,000 6,553,000 25,315,000 -4,192,000 3,109,000 10,624,000 26,689,000 -1,364,000 
          investing activities:
        		                             
          payments for acquisition of businesses, net of cash acquired
        		-1,495,000 -11,895,000   -1,000 -2,514,000   -411,000 -96,470,000 -24,689,000 -12,971,000 -48,511,000    -8,749,000 -30,009,000   -25,011,000 0   -187,488,000 -8,922,000    
          capital expenditures
        		-4,347,000 -4,735,000 -2,238,000 -2,766,000 -2,311,000 -1,698,000 -4,457,000 -1,727,000 -2,927,000 -3,264,000 -1,267,000 -2,190,000 -1,038,000 -1,420,000 -2,352,000 -3,039,000 -2,087,000 -1,476,000 -886,000 -1,644,000 -1,540,000 -1,453,000 -2,084,000 -4,583,000 -1,326,000 -2,203,000 -1,446,000 -1,684,000 -1,155,000 
          free cash flows
        		33,183,000 9,812,000 26,319,000 70,684,000 19,340,000 14,729,000 25,573,000 57,472,000 10,109,000 5,229,000 10,988,000 3,596,000 4,991,000 -548,000 15,799,000 33,532,000 3,416,000 -7,498,000 4,479,000 26,392,000 -152,000 -3,316,000 4,469,000 20,732,000 -5,518,000 906,000 9,178,000 25,005,000 -2,519,000 
          other investing activities
        		62,000 -4,638,000 -400,000 2,000 29,000 -1,000,000 -47,000 -1,405,000 0 -10,000,000 21,000 -343,000 -22,000 -239,000 23,000 -68,000 10,000 10,000 80,000 62,000 -2,000 0 14,000 2,000   15,000 23,000 473,000 
          net cash from investing activities
        		-5,780,000 -21,268,000 -16,318,000 -2,764,000 -2,283,000 -5,212,000 -5,225,000 -3,132,000 -3,338,000 -109,734,000 -25,935,000 -15,504,000 -49,571,000 -7,131,000 -2,329,000 -3,451,000 -12,526,000 -31,475,000 -3,076,000 -2,015,000 -26,553,000 -1,582,000 -2,779,000 -4,925,000 -188,802,000 -4,550,000 -9,645,000 -3,213,000 -2,773,000 
          financing activities:
        		                             
          settlement of convertible senior notes
        		0 0                            
          proceeds from the exercise of common stock options
        		21,816,000 6,494,000 17,383,000 19,844,000 10,614,000 2,019,000 13,635,000 9,872,000 737,000 1,151,000 1,452,000 237,000 203,000                 
          proceeds from employee stock purchase plan contributions
        		2,045,000 2,749,000 2,181,000 2,182,000 2,206,000 1,975,000 1,929,000 1,868,000 2,427,000 2,118,000 2,069,000 2,362,000 2,112,000                 
          payments for repurchase and retirement of common stock
        		    0 0                        
          proceeds from issuance of convertible senior notes, net of underwriters' discounts and commissions
        		                             
          repurchase of convertible senior notes
        		        0 370,000                    
          payments for issuance costs of convertible senior notes
        		                    0 -215,000        
          other financing activities
        		    -24,000 -25,000 -19,000 -29,000 -63,000 -39,000 -41,000 -90,000 -103,000 -228,000 -99,000 -107,000 -59,000 -191,000 -92,000 -118,000 -114,000 -140,000 -140,000 -119,000 -42,000 -79,000    
          net cash from financing activities
        		23,861,000 9,243,000 -62,165,000 22,026,000 12,796,000 3,969,000 15,545,000 5,456,000 -12,171,000 3,234,000 29,409,000 2,509,000 2,212,000 203,056,000 515,000 -29,836,000 557,000 30,426,000 191,000 76,000 -44,000 -184,000 207,911,000 -15,767,000 31,016,000 84,000 136,425,000 5,000 26,424,000 
          effect of exchange rate changes on cash, cash equivalents and restricted cash
        		-7,007,000 3,849,000 -703,000 -2,592,000 3,996,000 -2,555,000 -423,000 379,000 7,048,000 -5,916,000 -5,256,000 -970,000 -672,000 -1,104,000 484,000 -1,331,000 2,334,000 1,824,000 965,000 -2,113,000 1,407,000 -1,252,000 363,000 -176,000 -89,000 -477,000 -1,372,000 495,000 340,000 
          net increase in cash, cash equivalents and restricted cash
        		48,604,000 6,371,000 -50,629,000 90,120,000 36,160,000 12,629,000 39,927,000 61,902,000 4,575,000 -103,923,000 10,473,000 -8,179,000 -42,002,000 195,693,000 16,821,000 1,953,000 -4,132,000 -5,247,000 3,445,000 23,984,000 -23,802,000 -4,881,000 212,048,000 4,447,000 -162,067,000 -1,834,000 136,032,000 23,976,000 22,627,000 
          cash, cash equivalents and restricted cash at beginning of year
        		0 0 0 467,576,000 0 0 0 316,958,000 0 0 0 414,012,000 0 0 0 241,547,000 0 0 0 223,497,000 0 0 0 35,685,000 0 0 0 39,578,000 0 
          cash, cash equivalents and restricted cash at end of period
        		48,604,000 6,371,000 -50,629,000 557,696,000 36,160,000 12,629,000 39,927,000 378,860,000 4,575,000 -103,923,000 10,473,000 405,833,000 -42,002,000 195,693,000 16,821,000 243,500,000 -4,132,000 -5,247,000 3,445,000 247,481,000 -23,802,000 -4,881,000 212,048,000 40,132,000 -162,067,000 -1,834,000 136,032,000 63,554,000 22,627,000 
          supplemental disclosures of cash flow:
        		                             
          interest paid
        		2,035,000 1,000 2,257,000 46,000 2,118,000 3,000 2,118,000 3,000 2,129,000 7,000 288,000 1,000 289,000 5,000 292,000 47,000 411,000 14,000 291,000 15,000 279,000 23,000 137,000 225,000 153,000 29,000 31,000 10,000 370,000 
          income taxes paid
        		1,289,000 4,368,000 695,000 2,954,000 2,270,000 120,000 4,150,000 4,751,000 2,123,000 1,927,000 1,704,000 3,187,000 1,091,000 4,333,000 1,363,000 2,381,000 524,000 2,651,000 7,660,000 1,831,000 523,000 3,109,000 1,727,000 2,327,000 835,000 2,240,000 1,517,000 2,143,000 1,739,000 
          supplemental disclosure of non-cash investing and financing activities:
        		                             
          issuance of common stock in connection with acquisitions
        		0                1,866,000            0 
          promissory notes issued and deferred payment obligations for acquisitions and investments
        		                             
          property and equipment in accounts payable and other current liabilities
        		33,000 672,000 67,000 277,000 110,000                         
          loss on mark-to-market adjustment of contingent consideration
        		 0 44,000 145,000    7,006,000                      
          supplemental disclosure of cash flow:
        		                             
          deferred payment obligations for acquisitions
        		 6,596,000                            
          amortization of debt discount and issuance costs
        		        462,000 501,000 411,000 418,000 2,915,000 2,882,000 2,831,000 2,800,000 2,762,000 2,725,000 2,689,000 2,653,000 2,619,000 2,585,000        
          proceeds from private placement of common stock
        		            0                 
          payments on revolving commitment
        		            0 0 0 -30,000,000     0 0 -59,546,000 -68,395,000     -82,511,000 
          finance leases
        		                1,000 17,000 71,000 29,000 44,000 22,000 78,000 488,000      
          amortization of debt issuance costs
        		     469,000                        
          proceeds from issuance of convertible senior notes, net of discounts and commissions
        		         0                    
          payments of debt issuance costs
        		         -366,000                    
          deferred payment obligations for acquisitions and investments
        		                             
          property and equipment in accounts payable, other current liabilities and other liabilities
        		      -1,132,000 1,559,000  -823,000 758,000 772,000  -151,000 12,000 619,000  -135,000 -39,000 382,000          
          payments for repurchase of common stock
        		       -6,255,000                      
          repurchase and retirement of common stock
        		        -15,272,000 0                    
          borrowings under revolving commitment
        		                0    1,000 0 44,702,000 52,289,000     40,562,000 
          promissory notes issued and deferred payment obligations for acquisitions
        		                        1,451,000 0   -88,000 
          benefit from credit loss
        		         69,000 66,000 48,000 184,000 125,000 116,000 89,000 329,000 341,000 251,000 338,000          
          payments for acquisition of developed technology
        		            0 0 0 -344,000 -1,700,000 0 0 -433,000 0 -129,000 0 -344,000 11,000 0 -2,385,000 -353,000  
          proceeds from the exercise of stock options
        		              614,000 271,000 616,000 617,000 283,000 194,000  171,000 812,000 458,000  261,000    
          operating lease right-of-use assets and liabilities
        		               126,000  -56,000 47,000 -17,000  -9,000 -89,000 286,000      
          gain on sale of assets held for sale
        		                             
          impairment of intangible assets
        		                        0     
          operating lease right of use assets and liabilities
        		                             
          proceeds from sale of assets held for sale and other
        		                        1,000     
          proceeds from issuance of class a common stock in follow-on public offering, net of underwriters' discounts and commissions
        		                        0 0    
          proceeds from issuance of convertible senior notes, net of underwriters' discount and commissions
        		                     0        
          convertible senior notes issuance costs in accounts payable
        		                             
          benefit from bad debt
        		                    199,000 338,000 14,000 120,000 -61,000 186,000 204,000 65,000 93,000 
          gain on sale of assets held for sale and other
        		                        41,000     
          proceeds from issuance of common stock
        		                           302,000 1,316,000 
          payments for follow-on public offering and ipo offering costs
        		                             
          principal payments on long-term debt
        		                        -25,000 -25,000 -25,000 -51,000 -51,477,000 
          payments for redemption of common stock
        		                        0 0 -59,000 -60,000 -127,000 
          proceeds from issuance of class a common stock in initial public offering, net of underwriters' commissions
        		                             
          proceeds from issuance of debt
        		                             
          property and equipment in accounts payable, other accrued expenses and current liabilities, and other liabilities
        		                             
          issuance of common stock with put rights
        		                            0 
          initial public offering costs in accounts payable
        		                             
          impairment of intangibles
        		                             
          proceeds from the sale of assets held for sale and other
        		                             
          payments for follow-on public offering and initial public offering costs
        		                         -73,000    
          follow-on public offering costs in accounts payable
        		                         -73,000    
          property and equipment in accounts payable
        		                      122,000 295,000      
          payments for initial public offering costs
        		                             
          payment for return of capital
        		                             
          capital leases
        		                        -100,000 -15,000 445,000 565,000  
          notes issued for stock redemptions
        		                             
          initial public offering costs in other long-term assets
        		                             
          property and equipment in accounts payable and other accrued expenses and current liabilities
        		                          199,000 736,000  
          payments for acquisition of businesses
        		                           -1,199,000 0 
          payments of initial public offering costs
        		                           -186,000  
          write-down of inventory to net realizable value
        		                             
          proceeds from issuance of class a common stock in initial public offering, net of underwriting commissions
        		                             
          payments for ipo offering costs
        		                             
          property and equipment and developed technology in accounts payable, other accrued expenses and current liabilities, and other liabilities
        		                             
          obligations for return of capital in other current liabilities
        		                             
          purchase of noncontrolling interests
        		                             
          payments of deferred offering costs
        		                             
          principal payments on capital leases
        		                             
          deferred offering costs in other long-term assets