7Baggers

BlackLine, Inc
(NASDAQ:BL) 

BL stock logo

BlackLine, Inc. provides cloud-based solutions to automate and streamline accounting and finance operations in the United States and internationally. It offers financial close management solutions that include account reconciliations providing a centralized workspace from which users can collaborate...

Founded: 2001
Full Time Employees: 1,207
CEO: Therese Tucker  
Sector: Technology
Industry: Software-Infrastructure

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Quarterly
Annual
    Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 
                                           
      revenues
                                           
      subscription and support
    173,714,000 173,229,000 168,210,000 163,027,000 158,462,000 160,988,000 157,011,000 151,787,000 149,501,000 147,155,000 142,054,000 135,881,000 130,426,000 130,898,000 126,081,000 120,683,000 113,525,000 108,884,000 102,924,000 95,170,000 91,655,000 89,782,000 83,875,000 77,867,000 77,035,000 74,796,000 70,311,000 66,066,000 61,274,000 59,564,000 56,170,000 53,047,000 48,625,000 47,785,000 43,462,000 40,244,000 37,051,000 33,694,000 30,853,000 
      professional services
    9,441,000 9,952,000 10,080,000 8,998,000 8,469,000 8,472,000 8,898,000 8,719,000 7,960,000 8,575,000 8,654,000 8,693,000 8,558,000 9,059,000 8,187,000 7,794,000 6,711,000 6,442,000 6,478,000 6,952,000 7,201,000 5,928,000 6,282,000 5,405,000 5,563,000 5,462,000 4,614,000 3,598,000 2,855,000 2,752,000 2,564,000 2,407,000 2,659,000 2,448,000 2,409,000 2,049,000 1,583,000 1,646,000 1,343,000 
      total revenues
    183,155,000 183,181,000 178,290,000 172,025,000 166,931,000 169,460,000 165,909,000 160,506,000 157,461,000 155,730,000 150,708,000 144,574,000 138,984,000 139,957,000 134,268,000 128,477,000 120,236,000 115,326,000 109,402,000 102,122,000 98,856,000 95,710,000 90,157,000 83,272,000 82,598,000 80,258,000 74,925,000 69,664,000 64,129,000 62,316,000 58,734,000 55,454,000 51,284,000 50,233,000 45,871,000 42,293,000 38,634,000 35,340,000 32,196,000 
      yoy
    9.72% 8.10% 7.46% 7.18% 6.01% 8.82% 10.09% 11.02% 13.29% 11.27% 12.24% 12.53% 15.59% 21.36% 22.73% 25.81% 21.63% 20.50% 21.35% 22.64% 19.68% 19.25% 20.33% 19.53% 28.80% 28.79% 27.57% 25.62% 25.05% 24.05% 28.04% 31.12% 32.74% 42.14% 42.47%     
      qoq
    -0.01% 2.74% 3.64% 3.05% -1.49% 2.14% 3.37% 1.93% 1.11% 3.33% 4.24% 4.02% -0.70% 4.24% 4.51% 6.85% 4.26% 5.41% 7.13% 3.30% 3.29% 6.16% 8.27% 0.82% 2.92% 7.12% 7.55% 8.63% 2.91% 6.10% 5.91% 8.13% 2.09% 9.51% 8.46% 9.47% 9.32% 9.77%  
      cost of revenues
                                           
      total cost of revenues
    44,005,000 45,450,000 44,389,000 42,622,000 40,924,000 41,414,000 41,106,000 40,348,000 39,097,000 37,612,000 36,794,000 37,116,000 35,271,000 33,363,000 32,426,000 32,923,000 30,673,000 27,972,000 24,437,000 23,572,000 21,890,000 19,182,000 16,982,000 16,743,000 16,065,000 15,121,000 15,292,000 14,944,000 13,618,000 13,885,000 13,517,000 11,866,000 11,606,000 10,981,000 10,898,000 10,375,000 9,232,000 8,667,000 7,541,000 
      gross profit
    139,150,000 137,731,000 133,901,000 129,403,000 126,007,000 128,046,000 124,803,000 120,158,000 118,364,000 118,118,000 113,914,000 107,458,000 103,713,000 106,594,000 101,842,000 95,554,000 89,563,000 87,354,000 84,965,000 78,550,000 76,966,000 76,528,000 73,175,000 66,529,000 66,533,000 65,137,000 59,633,000 54,720,000 50,511,000 48,431,000 45,217,000 43,588,000 39,678,000 39,252,000 34,973,000 31,918,000 29,402,000 26,673,000 24,655,000 
      yoy
    10.43% 7.56% 7.29% 7.69% 6.46% 8.41% 9.56% 11.82% 14.13% 10.81% 11.85% 12.46% 15.80% 22.03% 19.86% 21.65% 16.37% 14.15% 16.11% 18.07% 15.68% 17.49% 22.71% 21.58% 31.72% 34.49% 31.88% 25.54% 27.30% 23.38% 29.29% 36.56% 34.95% 47.16% 41.85%     
      qoq
    1.03% 2.86% 3.48% 2.70% -1.59% 2.60% 3.87% 1.52% 0.21% 3.69% 6.01% 3.61% -2.70% 4.67% 6.58% 6.69% 2.53% 2.81% 8.17% 2.06% 0.57% 4.58% 9.99% -0.01% 2.14% 9.23% 8.98% 8.33% 4.29% 7.11% 3.74% 9.85% 1.09% 12.24% 9.57% 8.56% 10.23% 8.18%  
      gross margin %
    75.97% 75.19% 75.10% 75.22% 75.48% 75.56% 75.22% 74.86% 75.17% 75.85% 75.59% 74.33% 74.62% 76.16% 75.85% 74.37% 74.49% 75.75% 77.66% 76.92% 77.86% 79.96% 81.16% 79.89% 80.55% 81.16% 79.59% 78.55% 78.76% 77.72% 76.99% 78.60% 77.37% 78.14% 76.24% 75.47% 76.10% 75.48% 76.58% 
      operating expenses
                                           
      sales and marketing
    67,421,000 63,662,000 67,493,000 64,712,000 63,063,000 64,769,000 62,219,000 60,248,000 61,111,000 56,898,000 61,576,000 62,749,000 61,931,000 66,295,000 64,540,000 66,000,000 60,027,000 56,210,000 48,799,000 49,182,000 48,429,000 45,382,000 42,588,000 41,826,000 44,785,000 43,949,000 41,848,000 37,192,000 35,848,000 35,722,000 31,709,000 32,150,000 29,227,000 27,779,000 33,375,000 25,125,000 23,496,000 21,531,000 19,037,000 
      research and development
    30,560,000 28,182,000 27,331,000 27,964,000 25,725,000 24,588,000 25,649,000 25,721,000 25,015,000 22,578,000 26,722,000 26,802,000 27,105,000 28,022,000 27,721,000 27,902,000 25,248,000 20,711,000 18,843,000 18,795,000 18,973,000 18,041,000 14,829,000 11,847,000 11,747,000 10,312,000 11,558,000 10,829,000 10,307,000 8,753,000 7,261,000 7,811,000 6,929,000 6,034,000 5,883,000 6,009,000 5,948,000 5,573,000 5,087,000 
      general and administrative
    33,241,000 33,048,000 29,201,000 28,138,000 28,345,000 32,480,000 28,216,000 31,053,000 30,046,000 24,676,000 18,026,000 -148,000 28,976,000 5,158,000 31,000,000 14,345,000 29,652,000 26,621,000 11,372,000 20,245,000 28,269,000 20,297,000 17,794,000 16,182,000 17,338,000 15,613,000 14,088,000 12,677,000 13,679,000 12,380,000 11,268,000 12,458,000 11,082,000 11,147,000 8,920,000 8,636,000 8,253,000 8,278,000 7,698,000 
      restructuring costs
    1,693,000 6,016,000 2,267,000 1,044,000 5,299,000 -8,000 356,000 928,000 444,000 1,151,000 8,664,000 135,000 1,014,000                           
      total operating expenses
    132,915,000 130,908,000 126,292,000 121,858,000 122,432,000 121,829,000 116,440,000 117,950,000 116,616,000 105,303,000 114,988,000 89,538,000 119,026,000 103,316,000 123,261,000 108,247,000 114,927,000 103,542,000 79,014,000 88,222,000 95,671,000 83,720,000 75,211,000 69,855,000 73,870,000 69,874,000 67,494,000 60,698,000 59,834,000 56,855,000 50,238,000 52,419,000 47,238,000 44,960,000 48,178,000 39,770,000 37,697,000 35,382,000 31,822,000 
      income from operations
    6,235,000 6,823,000 7,609,000 7,545,000 3,575,000 6,217,000 8,363,000 2,208,000 1,748,000 12,815,000 -1,074,000 17,920,000 -15,313,000 3,278,000 -21,419,000 -12,693,000 -25,364,000 -16,188,000 5,951,000 -9,672,000 -18,705,000 -7,192,000 -2,036,000 -3,326,000 -7,337,000 -4,737,000 -7,861,000 -5,978,000 -9,323,000 -8,424,000 -5,021,000 -8,831,000 -7,560,000 -5,708,000 -13,205,000 -7,852,000 -8,295,000 -8,709,000 -7,167,000 
      yoy
    74.41% 9.75% -9.02% 241.71% 104.52% -51.49% -878.68% -87.68% -111.42% 290.94% -94.99% -241.18% -39.63% -120.25% -459.92% 31.23% 35.60% 125.08% -392.29% 190.80% 154.94% 51.83% -74.10% -44.36% -21.30% -43.77% 56.56% -32.31% 23.32% 47.58% -61.98% 12.47% -8.86% -34.46% 84.25%     
      qoq
    -8.62% -10.33% 0.85% 111.05% -42.50% -25.66% 278.76% 26.32% -86.36% -1293.20% -105.99% -217.02% -567.14% -115.30% 68.75% -49.96% 56.68% -372.02% -161.53% -48.29% 160.08% 253.24% -38.79% -54.67% 54.89% -39.74% 31.50% -35.88% 10.67% 67.78% -43.14% 16.81% 32.45% -56.77% 68.17% -5.34% -4.75% 21.52%  
      operating margin %
    3.40% 3.72% 4.27% 4.39% 2.14% 3.67% 5.04% 1.38% 1.11% 8.23% -0.71% 12.40% -11.02% 2.34% -15.95% -9.88% -21.10% -14.04% 5.44% -9.47% -18.92% -7.51% -2.26% -3.99% -8.88% -5.90% -10.49% -8.58% -14.54% -13.52% -8.55% -15.92% -14.74% -11.36% -28.79% -18.57% -21.47% -24.64% -22.26% 
      other income
    3,564,000 4,629,000 5,655,000 6,022,000 6,370,000 6,876,000 8,307,000 77,088,000 13,891,000 13,338,000 12,541,000 11,072,000 9,210,000 6,553,000 2,905,000 258,000      -5,611,000 -5,266,000 -4,656,000 -3,276,000 -3,106,000 -845,000 734,000 695,000 662,000 578,000 507,000 385,000 -688,500 275,000     
      interest income
    6,058,000 7,178,000 8,200,000 8,555,000 8,892,000 9,399,000 10,984,000 14,065,000 15,360,000 14,822,000 14,030,000 12,542,000 10,665,000 8,017,000 4,387,000 1,715,000 518,000 288,000 231,000 87,000 94,000 360,000 648,000 1,085,000 2,409,000 2,538,000 2,161,000 734,000 695,000 662,000 578,000 507,000 389,000 320,000 281,000 244,000 224,000   
      interest expense
    -2,494,000 -2,549,000 -2,545,000 -2,533,000 -2,522,000 -2,523,000 -2,677,000 -2,089,000 -1,469,000 -1,484,000 -1,489,000 -1,470,000 -1,455,000 -1,464,000 -1,482,000 -1,457,000 -1,447,000 -16,363,000 -16,110,000 -15,668,000 -14,804,000 -5,971,000 -5,914,000 -5,741,000 -5,685,000 -5,644,000 -3,006,000      -4,000  -6,000 -3,000 -4,000 -2,798,000 -1,294,000 
      income before income taxes
    9,799,000 11,452,000 13,264,000 13,567,000 9,945,000 13,093,000 16,670,000 79,296,000 15,639,000 26,153,000 11,467,000 28,992,000 -6,103,000 9,831,000 -18,514,000 -12,435,000 -26,293,000 -32,263,000 -9,928,000 -25,253,000 -33,415,000 -12,803,000 -7,302,000 -7,982,000 -10,613,000 -7,843,000 -8,706,000 -5,244,000 -8,628,000 -7,762,000 -4,443,000 -8,324,000 -7,175,000 -5,388,000 -12,930,000 -10,101,000 -9,075,000 -17,687,000 -8,461,000 
      provision for income taxes
    5,908,000 5,471,000 4,653,000 6,176,000 4,671,000 -50,374,000 2,101,000 4,337,000 869,000 1,901,000 -2,005,000 926,000 628,000 -668,000 474,000 -464,000  213,000 -210,000 323,000 -191,000 -169,000 555,000 -41,000 357,000 1,168,000 206,000 146,000 205,000 32,000 17,000 133,000  457,000 162,000 13,000    
      net income
    3,891,000 5,981,000 8,611,000 7,391,000 5,274,000 63,467,000 14,569,000 74,959,000 14,770,000 24,252,000 13,472,000 28,066,000 -6,731,000 10,499,000 -18,988,000 -11,971,000 -13,431,000 -32,476,000 -9,718,000 -25,576,000 -33,224,000 -12,634,000 -7,857,000 -7,941,000 -10,970,000 -9,011,000 -8,912,000 -5,390,000 -8,833,000 -7,794,000 -4,460,000 -8,457,000 -7,155,000 -5,845,000 -13,092,000 -10,114,000 -9,010,000 -15,664,000 -6,619,000 
      yoy
    -26.22% -90.58% -40.90% -90.14% -64.29% 161.70% 8.14% 167.08% -319.43% 130.99% -170.95% -334.45% -49.88% -132.33% 95.39% -53.19% -59.57% 157.05% 23.69% 222.08% 202.86% 40.21% -11.84% 47.33% 24.19% 15.61% 99.82% -36.27% 23.45% 33.34% -65.93% -16.38% -20.59% -62.69% 97.79%     
      qoq
    -34.94% -30.54% 16.51% 40.14% -91.69% 335.63% -80.56% 407.51% -39.10% 80.02% -52.00% -516.97% -164.11% -155.29% 58.62% -10.87% -58.64% 234.18% -62.00% -23.02% 162.97% 60.80% -1.06% -27.61% 21.74% 1.11% 65.34% -38.98% 13.33% 74.75% -47.26% 18.20% 22.41% -55.35% 29.44% 12.25% -42.48% 136.65%  
      net income margin %
    2.12% 3.27% 4.83% 4.30% 3.16% 37.45% 8.78% 46.70% 9.38% 15.57% 8.94% 19.41% -4.84% 7.50% -14.14% -9.32% -11.17% -28.16% -8.88% -25.04% -33.61% -13.20% -8.71% -9.54% -13.28% -11.23% -11.89% -7.74% -13.77% -12.51% -7.59% -15.25% -13.95% -11.64% -28.54% -23.91% -23.32% -44.32% -20.56% 
      net income attributable to redeemable non-controlling interest
    394,000 380,000 1,649,000 660,000 397,000 670,000 320,000 524,000 438,000 293,000 194,000 320,000 85,000                           
      adjustment attributable to redeemable non-controlling interest
    -4,629,000 715,000 1,677,000 -1,561,000 -1,178,000 6,380,000 -2,989,000 -2,255,000 3,503,000 1,890,000 1,355,000 -3,103,000 5,192,000                           
      net income attributable to blackline, inc.
    8,126,000 4,886,000 5,285,000 8,292,000 6,055,000 56,417,000 17,238,000 76,690,000 10,829,000 22,069,000 11,923,000 30,849,000                            
      basic net income per share attributable to blackline, inc.
    0.14 0.08 0.09 0.13 0.1 0.9 0.28 1.24 0.18 0.36 0.2 0.51                            
      shares used to calculate basic net income per share
    59,439 -605 61,157 62,143 62,822 171 62,250 61,979 61,643 183 61,101 60,700                            
      diluted net income per share attributable to blackline, inc.
    0.13 0.08 0.09 0.13 0.1 0.79 0.27 0.22 0.17 0.32 0.19 0.45                            
      shares used to calculate diluted net income per share
    69,835 1,913 63,197 64,004 64,839 372 73,970 72,522 72,893 143 72,102 71,801                            
      gain on extinguishment of convertible senior notes
           65,112,000                                
      net loss attributable to blackline, inc.
                -12,008,000 11,304,000 -20,019,000 -10,665,000 -10,011,000 -37,010,000 -13,741,000 -25,446,000 -38,964,000 -16,985,000 -8,751,000 -8,332,000 -12,843,000 -9,485,000 -9,242,000 -5,225,000 -8,583,000           
      basic net loss per share attributable to blackline, inc.
                -0.2 0.19 -0.34 -0.18 -0.17 -0.63 -0.23 -0.44 -0.67 -0.3 -0.15 -0.15 -0.23 -0.17 -0.17 -0.09 -0.16           
      shares used to calculate basic net loss per share
                60,187 117 59,695 59,441 59,123 155 58,508 58,214 57,860 213 57,063 56,614 56,174 156 55,480 55,171 54,835 252 54,263 53,555 53,151       
      diluted net loss per share attributable to blackline, inc.
                -0.2 0.19 -0.34 -0.18 -0.17 -0.63 -0.23 -0.44 -0.67 -0.3 -0.15 -0.15 -0.23 -0.17 -0.17 -0.09 -0.16           
      shares used to calculate diluted net loss per share
                60,187 117 59,695 59,441 59,123 155 58,508 58,214 57,860 213 57,063 56,614 56,174 156 55,480 55,171 54,835 252 54,263 53,555 53,151       
      net loss attributable to redeemable non-controlling interest
                 99,000 -344,000                         
      adjustment attributable to non-controlling interest
                 -806,750 1,375,000 -1,185,000 -3,417,000 4,711,000 4,275,000 154,000 5,937,000 4,619,000 1,319,000 719,000 2,201,000               
      net loss attributable to non-controlling interest
                   -121,000 -3,000 -177,000 -252,000 -284,000 -197,000 -268,000 -425,000 -328,000 -328,000    -250,000           
      other expense
                    -929,000 -11,542,500 -15,879,000 -15,581,000 -14,710,000               -2,249,000 -780,000 -8,978,000 -1,294,000 
      benefit from income taxes
                    -12,862,000                -20,000    -65,000 -2,023,000 -1,842,000 
      net loss and adjustment attributable to non-controlling interest
                             -21,250 330,000 -165,000            
      change in fair value of the common stock warrant liability
                                       -2,490,000 -1,000,000 -6,180,000  
      basic net loss per share
                                 -0.093 -0.08 -0.16 -0.13       
      diluted net loss per share
                                 -0.093 -0.08 -0.16 -0.13       
      * see note 3 for a summary of adjustments.
                                           
      net income per share
                                     -0.155 -0.25 -0.2 -0.18 -0.34 -0.16 
      weighted-average common shares outstanding, basic and diluted
                                      52,592 51,842 51,282 42,497 40,824,314 
                                           
    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 
                                             
        assets
                                             
        current assets:
                                             
        cash and cash equivalents
      242,041,000 390,034,000 419,900,000 459,141,000 479,536,000 885,915,000 725,266,000 616,629,000 331,401,000 271,117,000 236,248,000 204,514,000 222,557,000 200,968,000 190,514,000 208,454,000 365,522,000 539,739,000 378,977,000 643,343,000 848,268,000 367,413,000 408,070,000 471,620,000 310,989,000 120,232,000 528,197,000 63,255,000 49,676,000 46,181,000 38,401,000 28,682,000 30,864,000 31,104,000 24,645,000 23,507,000 23,448,000 22,118,000 19,586,000 
        marketable securities
      283,030,000 388,178,000 384,279,000 398,277,000 386,945,000  121,017,000 428,461,000 913,453,000 933,355,000 925,721,000 921,737,000 865,314,000 874,083,000 855,406,000 821,137,000 666,122,000 658,964,000 798,952,000 524,851,000 308,991,000 175,206,000 117,433,000 154,876,000 302,978,000 487,515,000 68,324,000 81,939,000 85,079,000 86,396,000 86,715,000 86,191,000 83,168,000 81,476,000 85,125,000 83,744,000 77,868,000 83,130,000  
        accounts receivable
      174,890,000 218,100,000 155,597,000 175,021,000 146,609,000 178,141,000 136,497,000 137,439,000 125,613,000 171,608,000 130,477,000 129,798,000 120,419,000 150,858,000 108,792,000 120,721,000 117,554,000 125,130,000 105,042,000 100,909,000 89,423,000 111,270,000 91,137,000 98,124,000 90,057,000 102,829,000 81,865,000 79,135,000 72,343,000 74,902,000 63,398,000 61,057,000 57,019,000 61,589,000 45,233,000 43,525,000 43,889,000 42,294,000 36,761,000 
        prepaid expenses and other current assets
      32,141,000 28,897,000 24,047,000 23,748,000 30,263,000 28,348,000 30,449,000 27,677,000 33,189,000 31,244,000 26,694,000 27,697,000 34,911,000 23,658,000 22,363,000 21,210,000 22,278,000 23,855,000 18,462,000 18,255,000 20,809,000 20,226,000 137,357,000 15,293,000 16,572,000 12,830,000 10,874,000 11,453,000 12,241,000 14,042,000 15,979,000 16,603,000 15,625,000 6,140,000 6,794,000 6,927,000 7,777,000 6,614,000 4,456,000 
        total current assets
      732,102,000 1,025,209,000 983,823,000 1,056,187,000 1,043,353,000 1,092,404,000 1,013,229,000 1,210,206,000 1,403,656,000 1,407,324,000 1,319,140,000 1,283,746,000 1,243,201,000 1,249,567,000 1,177,075,000 1,171,522,000 1,171,476,000 1,347,688,000 1,301,433,000 1,287,358,000 1,267,491,000 674,115,000 753,997,000 739,913,000 720,596,000 723,406,000 689,260,000 235,782,000 219,339,000 221,521,000 204,493,000 192,533,000 186,676,000 193,954,000 172,743,000 167,548,000 162,515,000 163,823,000 68,032,000 
        capitalized software development costs
      50,689,000 49,494,000 48,801,000 47,554,000 46,139,000 45,448,000 43,327,000 40,873,000 38,982,000 37,828,000 36,899,000 36,349,000 34,374,000 32,070,000 30,452,000 28,115,000 25,489,000 23,547,000 22,077,000 20,002,000 17,858,000 15,690,000 13,925,000 12,754,000 11,015,000 10,032,000 9,424,000 9,252,000 8,969,000 9,023,000 8,925,000 8,308,000 7,557,000 6,824,000 6,129,000 5,375,000 5,049,000 4,591,000 4,113,000 
        property and equipment
      12,957,000 13,255,000 13,026,000 13,843,000 14,273,000 11,840,000 10,637,000 11,791,000 13,065,000 14,867,000 15,289,000 17,009,000 18,956,000 19,811,000 20,636,000 19,804,000 15,977,000 16,321,000 13,167,000 11,517,000 12,512,000 13,239,000 10,787,000 12,160,000 13,155,000 13,024,000 12,891,000 13,762,000 13,785,000 13,536,000 13,155,000 13,754,000 13,280,000 12,769,000 12,126,000 10,959,000 11,274,000 11,318,000 11,857,000 
        intangible assets
      45,569,000 49,352,000 48,897,000 52,402,000 55,870,000 59,520,000 63,646,000 68,665,000 73,860,000 79,056,000 84,305,000 80,645,000 85,779,000 90,864,000 96,045,000 101,227,000 106,433,000 36,195,000 38,244,000 40,874,000 43,781,000 46,674,000 15,066,000 16,688,000 15,977,000 17,520,000 19,063,000 21,629,000 24,708,000 27,785,000 30,868,000 34,173,000 37,485,000 40,808,000 44,130,000 47,455,000 50,788,000 54,118,000 57,434,000 
        goodwill
      465,715,000 465,804,000 448,965,000 448,965,000 448,965,000 448,965,000 448,965,000 448,965,000 448,965,000 448,965,000 448,987,000 443,861,000 443,861,000 443,861,000 443,861,000 443,861,000 443,861,000 289,710,000 289,710,000 289,710,000 289,710,000 289,710,000 185,138,000 185,138,000 185,138,000 185,138,000 185,138,000 185,138,000 185,138,000 185,138,000 185,138,000 185,138,000 185,138,000 185,138,000 185,138,000 185,138,000 185,138,000 185,138,000 185,052,000 
        operating lease right-of-use assets
      19,531,000 22,756,000 23,919,000 25,689,000 26,818,000 22,772,000 23,965,000 18,245,000 19,196,000 19,173,000 19,937,000 21,272,000 14,066,000 14,708,000 15,265,000 15,863,000 16,906,000 16,264,000 6,798,000 7,911,000 8,634,000 8,708,000 9,274,000 10,308,000 11,449,000 12,549,000 13,381,000 13,459,000 13,655,000           
        deferred tax assets
      37,739,000 39,341,000 44,536,000 55,714,000 54,324,000 53,208,000                                  
        other assets
      91,216,000 94,308,000 91,859,000 92,335,000 91,406,000 90,879,000 91,391,000 91,937,000 91,161,000 93,552,000 91,578,000 92,484,000 92,417,000 92,775,000 94,324,000 93,181,000 90,088,000 87,853,000 78,963,000 74,695,000 68,811,000 65,369,000 58,578,000 56,289,000 54,044,000 52,883,000 46,482,000 44,480,000 39,359,000 36,865,000 32,115,000 30,534,000 28,379,000 1,391,000 1,857,000 1,517,000 1,471,000 1,449,000 4,747,000 
        total assets
      1,455,518,000 1,759,519,000 1,703,826,000 1,792,689,000 1,781,148,000 1,825,036,000 1,695,160,000 1,890,682,000 2,088,885,000 2,100,765,000 2,016,135,000 1,975,366,000 1,932,654,000 1,943,656,000 1,877,658,000 1,873,573,000 1,870,230,000 1,817,578,000 1,750,392,000 1,732,067,000 1,708,797,000 1,113,505,000 1,046,765,000 1,033,250,000 1,011,374,000 1,014,552,000 975,639,000 523,502,000 504,953,000 493,868,000 474,694,000 464,440,000 458,515,000 440,884,000 422,123,000 417,992,000 416,235,000 420,437,000 331,235,000 
        liabilities, redeemable non-controlling interest, and stockholders' equity
                                             
        current liabilities:
                                             
        accounts payable
      5,846,000 15,523,000 10,439,000 11,520,000 3,959,000 8,463,000 3,930,000 2,083,000 1,556,000 8,623,000 4,802,000 7,899,000 4,573,000 14,964,000 5,534,000 14,521,000 16,285,000 7,471,000 2,175,000 3,869,000 3,365,000 3,150,000 2,088,000 6,172,000 11,357,000 7,401,000 1,614,000 2,963,000 4,173,000 3,442,000 2,902,000 2,496,000 6,566,000 7,254,000 2,934,000 5,055,000 4,269,000 7,165,000 8,456,000 
        accrued expenses and other current liabilities
      59,421,000 76,790,000 75,621,000 57,448,000 62,759,000 71,574,000 68,437,000 51,924,000 47,133,000 59,690,000 61,352,000 45,152,000 49,031,000 58,600,000 51,144,000 40,329,000 38,401,000 50,930,000 38,869,000 33,628,000 33,420,000 35,958,000 29,546,000 22,913,000 20,378,000 30,098,000 25,704,000 20,460,000 18,409,000 24,705,000 20,174,000 19,248,000 12,240,000 20,874,000 18,354,000 16,113,000 15,719,000 18,931,000 17,485,000 
        deferred revenue, current
      359,598,000 368,593,000 325,203,000 341,549,000 330,804,000 338,615,000 300,989,000 311,256,000 306,855,000 320,133,000 277,804,000 280,050,000 277,107,000 279,325,000 245,155,000 246,810,000                        
        finance lease liabilities, current
      13,000 12,000 12,000 12,000 12,000 66,000 324,000 469,000 525,000 778,000 930,000 1,031,000 1,012,000 989,000 981,000 401,000 399,000 373,000                      
        operating lease liabilities, current
      4,856,000 4,436,000 5,825,000 3,709,000 3,379,000 3,525,000 3,657,000 4,035,000 4,233,000 4,108,000 4,065,000 4,394,000 5,872,000 5,943,000 5,253,000 5,203,000 5,231,000 4,936,000                      
        convertible senior notes, net, current
       230,023,000 229,807,000 229,592,000 229,379,000   249,888,000 249,560,000 249,233,000 248,904,000                             
        total current liabilities
      429,734,000 695,377,000 646,907,000 643,830,000 630,292,000 422,243,000 377,337,000 619,655,000 609,862,000 642,565,000 605,857,000 355,036,000 363,548,000 367,821,000 314,581,000 328,256,000 339,494,000 322,577,000 256,249,000 259,769,000 248,238,000 242,330,000 203,630,000 202,995,000 199,587,000 206,997,000 178,205,000 174,748,000 162,631,000 159,229,000 143,344,000 141,172,000 131,547,000 137,039,000 117,454,000 111,957,000 110,343,000 108,464,000 97,723,000 
        finance lease liabilities, noncurrent
      37,000 40,000 43,000 46,000 49,000 53,000 55,000   4,000 109,000 266,000 528,000 785,000 1,050,000 623,000 724,000 824,000                      
        operating lease liabilities, noncurrent
      15,737,000 19,850,000 19,119,000 23,294,000 24,645,000 20,283,000 21,753,000 14,426,000 15,360,000 15,738,000 16,399,000 17,855,000 8,717,000 9,292,000 9,953,000 11,074,000 13,338,000 13,248,000 5,463,000 6,445,000 7,215,000 7,356,000 7,828,000 8,724,000 9,734,000 10,606,000 11,710,000 11,687,000 12,000,000           
        convertible senior notes, net, noncurrent
      666,678,000 666,046,000 665,403,000 664,762,000 664,130,000 892,675,000 891,826,000 890,979,000 1,141,666,000 1,140,608,000 1,139,539,000                             
        deferred tax liabilities
      4,585,000 5,244,000 4,658,000 4,804,000 4,335,000 4,532,000 4,847,000 5,017,000 5,251,000 6,394,000 6,022,000 5,618,000 5,487,000 5,568,000 5,274,000 5,540,000 5,809,000 8,175,000 9,511,000 9,764,000 11,785,000 6,566,000 4,750,000 4,733,000 4,584,000 4,571,000 1,151,000 1,098,000 1,116,000 1,116,000 1,300,000 1,436,000 1,501,000 1,328,000 993,000 1,144,000 1,100,000 1,262,000 3,874,000 
        deferred revenue, noncurrent
      447,000 922,000 573,000 796,000 1,265,000 1,390,000 1,197,000 1,979,000 2,352,000 904,000 697,000 643,000 741,000 343,000 415,000 418,000 262,000 362,000 276,000 327,000 116,000 75,000 72,000 93,000 128,000 163,000 222,000 174,000 196,000 277,000 317,000 382,000 477,000 912,000 2,100,000 2,487,000 2,400,000 2,373,000  
        other long-term liabilities
      779,000 593,000 569,000 6,110,000 2,711,000 708,000 604,000 795,000 660,000 3,608,000 3,975,000 3,641,000 3,119,000 6,229,000 4,893,000 3,490,000 1,187,000 124,000 75,000 25,000          2,982,000 3,155,000 3,314,000 3,459,000 3,119,000 2,190,000 2,204,000 2,343,000 2,318,000 3,917,000 
        total liabilities
      1,117,997,000 1,388,072,000 1,337,272,000 1,343,642,000 1,327,427,000 1,341,884,000 1,297,619,000 1,532,851,000 1,775,151,000 1,809,821,000 1,772,598,000 1,772,716,000 1,786,510,000 1,807,893,000 1,775,132,000 1,770,755,000 1,778,951,000 1,463,843,000 1,387,603,000 1,376,994,000 1,351,010,000 678,911,000 621,703,000 616,282,000 608,407,000 611,034,000 574,765,000 192,199,000 180,242,000 167,912,000 152,261,000 150,352,000 140,954,000 146,256,000 126,334,000 121,211,000 131,889,000 129,027,000 178,687,000 
        commitments and contingencies
                                             
        redeemable non-controlling interest
      31,571,000 39,121,000 38,254,000 35,000,000 35,818,000 36,483,000 29,630,000 32,068,000 33,900,000 30,063,000 27,806,000 26,288,000 29,152,000 23,895,000 24,595,000 23,635,000 25,151,000 28,699,000 22,049,000 18,032,000 18,159,000 12,524,000 8,128,000 7,190,000 6,778,000 4,905,000 4,453,000 4,118,000 4,175,000 4,387,000          
        stockholders' equity:
                                             
        common stock, 0.01 par value...
      592,000 599,000 599,000 619,000 623,000 628,000 624,000 622,000 618,000 615,000 613,000 610,000 605,000 600,000    590,000    577,000    559,000    547,000    530,000    513,000  
        additional paid-in capital
      327,307,000 356,841,000 358,220,000 450,975,000 461,570,000 495,391,000 479,191,000 451,737,000 480,175,000 474,863,000 455,038,000 429,320,000 396,403,000 385,709,000 363,782,000 344,264,000 318,297,000 625,883,000 609,433,000 596,183,000 573,431,000 622,768,000 605,078,000 590,119,000 569,799,000 561,275,000 548,201,000 470,681,000 459,118,000 451,571,000 444,840,000 432,068,000 427,104,000 419,628,000 414,915,000 402,859,000 380,288,000 378,272,000 223,805,000 
        accumulated other comprehensive loss
      -628,000 -296,000 -100,000 -166,000 -178,000      -1,159,000 -1,529,000 -231,000                  -92,000 -117,000 -133,000 -63,000 -32,000 -73,000 -39,000   
        accumulated deficit
      -21,321,000 -24,818,000 -30,419,000 -37,381,000 -44,112,000 -48,989,000 -111,786,000 -126,035,000 -200,470,000 -214,802,000 -238,761,000 -252,039,000 -279,785,000 -272,969,000 -283,369,000 -264,725,000 -252,875,000 -301,735,000 -269,436,000 -259,970,000 -234,678,000 -201,651,000 -189,285,000 -181,853,000 -174,240,000 -163,598,000 -152,751,000 -144,348,000 -139,177,000 -130,594,000 -122,862,000 -118,402,000 -109,945,000 -125,467,000 -119,622,000 -106,530,000 -96,416,000 -87,334,000 -71,670,000 
        total stockholders' equity
      305,950,000 332,326,000 328,300,000 414,047,000 417,903,000 446,669,000 367,911,000 325,763,000 279,834,000 260,881,000 215,731,000 176,362,000 116,992,000 111,868,000 77,931,000 79,183,000 66,128,000 325,036,000 340,740,000 337,041,000 339,628,000 422,070,000 416,934,000 409,778,000 396,189,000 398,613,000 396,421,000 327,185,000 320,536,000 321,569,000 322,433,000 314,088,000 317,561,000 294,628,000 295,789,000 296,781,000 284,346,000 291,410,000 152,548,000 
        total liabilities, redeemable non-controlling interest, and stockholders' equity
      1,455,518,000 1,759,519,000 1,703,826,000 1,792,689,000 1,781,148,000 1,825,036,000 1,695,160,000 1,890,682,000 2,088,885,000 2,100,765,000 2,016,135,000 1,975,366,000 1,932,654,000 1,943,656,000 1,877,658,000 1,873,573,000 1,870,230,000 1,817,578,000 1,750,392,000 1,732,067,000 1,708,797,000 1,113,505,000 1,046,765,000 1,033,250,000 1,011,374,000 1,014,552,000 975,639,000 523,502,000 504,953,000 493,868,000          
        accumulated other comprehensive income
           -361,000 -118,000 -561,000 -489,000 205,000    -1,472,000 -3,080,000 -952,000 113,000 298,000 157,000 244,000 295,000 376,000 568,000 943,000 66,000 377,000 415,000 299,000 45,000 45,000        -41,000  
        contingent consideration, current
                8,000,000 16,510,000 25,953,000 8,000,000 6,514,000 20,992,000 36,878,000 16,438,000                      
        contingent consideration, noncurrent
                 2,610,000 18,702,000 33,549,000 56,052,000 39,829,000 37,985,000 4,294,000                      
        convertible senior notes
                 1,387,047,000 1,385,668,000 1,384,306,000 1,382,914,000 1,381,525,000 1,380,152,000 1,114,239,000 1,097,973,000 1,081,942,000 1,066,352,000 407,032,000 401,217,000 395,459,000 389,875,000 384,343,000 378,856,000             
        common stock
                    598,000 596,000 593,000  586,000 584,000 580,000  573,000 569,000 564,000  556,000 553,000 550,000  547,000 539,000 535,000  528,000 525,000 513,000   
        deferred revenue
                      242,300,000 242,429,000 209,608,000 206,564,000 193,429,000 191,137,000 165,699,000 167,403,000 161,289,000 162,552,000 144,100,000 144,300,000 133,024,000 129,074,000 118,260,000 117,420,000 110,733,000 106,903,000 94,158,000 88,781,000 88,347,000 80,360,000 69,774,000 
        short-term portion of operating lease liabilities
                        3,589,000 4,020,000 4,136,000 4,147,000 4,289,000 4,499,000 4,555,000 4,938,000 4,779,000 5,017,000 5,017,000           
        short-term portion of contingent consideration
                        2,008,000 11,688,000 13,888,000 7,938,000 2,008,000 2,008,000 2,008,000 2,008,000 2,008,000 2,008,000 2,008,000 2,008,000 2,008,000 2,008,000 2,008,000 2,008,000 2,008,000 2,008,000 2,008,000 2,008,000 2,008,000 
        contingent consideration
                        18,056,000 18,722,000 17,304,000 15,552,000 4,206,000 4,278,000 4,499,000 4,354,000 4,621,000 4,492,000 4,299,000 4,308,000 4,145,000 4,048,000 3,970,000 3,858,000 3,597,000 3,419,000 3,323,000 3,230,000 3,137,000 
        preferred stock, 0.01 par value...
                                             
        * see note 3 for a summary of adjustments.
                                             
        liabilities and stockholders' equity
                                             
        total liabilities and stockholders' equity
                                    474,694,000 464,440,000 458,515,000 440,884,000 422,123,000 417,992,000 416,235,000 420,437,000 331,235,000 
        deferred sales commissions
                                       13,645,000 10,946,000 9,845,000 9,533,000 9,667,000 7,229,000 
        common stock warrant liability
                                          12,380,000 11,380,000 5,200,000 
        term loan
                                            64,836,000 
        treasury stock
                                             
        41,316,829 issued and outstanding as of september 30, 2016 and
                                             
        40,720,327 issued and 40,673,327 outstanding as
                                             
        of december 31, 2015
                                            413,000 
        september 30, 2016 and december 31, 2015, respectively
                                             
      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 
                                              
          cash flows from operating activities
                                              
          net income attributable to blackline, inc.
        8,126,000 4,886,000 5,285,000 8,292,000 6,055,000 56,417,000 17,238,000 76,690,000 10,829,000 22,069,000 11,923,000                            
          net income and adjustment attributable to redeemable non-controlling interest
        -4,235,000 1,095,000 3,326,000 -901,000 -781,000 7,050,000 -2,669,000 -1,731,000 3,941,000 2,183,000 1,549,000                            
          net income
        3,891,000 5,981,000 8,611,000 7,391,000 5,274,000 63,467,000 14,569,000 74,959,000 14,770,000 24,252,000 13,472,000                            
          adjustments to reconcile net income to net cash from operating activities:
                                              
          depreciation and amortization
        12,166,000 11,912,000 11,650,000 11,475,000 11,498,000 12,120,000 12,925,000 12,652,000 12,648,000 12,825,000 12,924,000 12,346,000 12,004,000 11,830,000 11,180,000 10,659,000 9,147,000 6,953,000 6,743,000 6,890,000 6,542,000 6,277,000 5,178,000 4,867,000 4,570,000 4,471,000 5,327,000 5,787,000 5,689,000 5,569,000 5,836,000 5,537,000 5,394,000 5,185,000 5,087,000 4,908,000 4,791,000 4,734,000 
          amortization of debt issuance costs
        805,000 859,000 856,000 845,000 834,000 849,000 958,000 1,294,000 1,385,000 1,398,000 1,396,000 1,379,000 1,362,000                          
          stock-based compensation
        23,741,000 25,965,000 23,394,000 24,657,000 18,574,000 19,340,000 22,623,000 22,726,000 18,562,000 17,505,000 20,079,000 19,948,000 20,438,000 18,474,000 20,899,000 20,609,000 15,902,000 17,081,000 16,930,000 17,065,000 14,794,000 14,292,000 13,326,000 12,616,000 9,456,000 9,447,000 10,141,000 8,012,000 6,452,000 6,188,000 5,340,000 5,393,000 3,974,000 3,093,000 9,115,000 1,987,000 1,849,000 1,992,000 
          noncash lease expense
        1,545,000 1,840,000 1,389,000 1,297,000 1,397,000 1,611,000 1,500,000 1,552,000 1,558,000 1,728,000 1,533,000 1,694,000 1,498,000  1,325,000 1,416,000 1,445,000 1,126,000 1,202,000 1,160,000 1,025,000 1,096,000 1,186,000 1,141,000 1,230,000 1,336,000 1,217,000 1,215,000 1,245,000          
          accretion of purchase discounts on marketable securities
        -2,544,000 -3,186,000 -3,143,000 -3,393,000 -1,968,000 -326,000 -2,854,000 -6,719,000 -8,542,000  -9,231,000    -2,762,000   164,000 -88,000 -37,000 -33,000 176,000 301,000                
          net foreign currency losses
        122,000 -148,000 192,000 788,000 -227,000 -81,000 517,000 -195,000 38,000 -29,000 -20,000 429,000 473,000 -7,000 -637,000 -644,000 -182,000 -366,000 35,000 110,000 333,000 52,000 -237,000 -864,000 826,000 -73,000 137,000 -127,000 128,000 86,000 -69,000 462,000 -59,000      
          deferred income taxes
        979,000 6,289,000 10,992,000 -921,000 -1,313,000 -53,323,000 -224,000 -214,000 -1,041,000 281,000 -1,754,000 135,000 -187,000 291,000 -266,000 -273,000 -14,156,000 -857,000 -14,000 47,000 7,000 -560,000 17,000 149,000 13,000 1,279,000 53,000   -480,000 -136,000 -65,000 -242,000 335,000 -151,000 44,000 -162,000 -2,612,000 
          provision for credit losses
        -3,000 6,000 26,000 19,000 56,000 70,000 7,000   -1,000 2,000 -24,000 5,000 30,000 4,000 53,000 28,000 -45,000                     
          changes in operating assets and liabilities:
                                              
          accounts receivable
        41,862,000 -62,245,000 18,618,000 -27,269,000 32,737,000 -43,317,000 1,770,000 -11,701,000 45,696,000 -41,300,000 -256,000 -9,465,000 30,166,000 -41,354,000 12,152,000 -3,290,000 9,459,000 -19,691,000 -4,233,000 -11,311,000 20,980,000 -17,290,000 7,152,000 -7,742,000 12,147,000 -20,507,000 -3,184,000 -6,604,000 2,333,000 -11,472,000 -2,387,000 -4,406,000 5,058,000 -16,319,000 -2,310,000 364,000 -1,595,000 -5,608,000 
          prepaid expenses and other current assets
        -3,308,000 -4,657,000 -382,000 6,666,000 -1,878,000 -1,609,000 827,000 5,488,000 -1,964,000 -4,449,000 1,806,000 1,312,000 -5,268,000 -1,180,000 -1,271,000 934,000 2,576,000 -5,602,000 -282,000 2,600,000 -672,000 -2,168,000 -627,000 -1,017,000 -1,499,000 -1,905,000 528,000 812,000 1,789,000 1,943,000 232,000 -733,000 -1,891,000 1,054,000 133,000 850,000 -1,163,000 -2,159,000 
          other assets
        3,106,000 -2,437,000 202,000 -911,000 -517,000 298,000 598,000 -797,000 2,406,000 -1,947,000 957,000 -72,000 467,000 -3,757,000 -1,157,000 -3,104,000 -2,094,000 -8,896,000 -4,272,000 -5,881,000 -3,456,000 -6,760,000 -2,278,000 -2,239,000 -1,167,000 -6,782,000 -2,011,000 -5,137,000 -2,499,000 -4,458,000 -1,563,000 -2,169,000 -1,285,000 66,000 -340,000 -46,000 -22,000 -51,000 
          accounts payable
        -7,716,000 4,124,000 -1,307,000 6,119,000 -3,590,000 4,333,000 1,087,000 249,000 -6,792,000 4,341,000 -3,363,000 3,436,000 -9,518,000 8,947,000 -8,698,000 -2,428,000 6,555,000 4,982,000 -1,751,000 114,000 652,000 210,000 -3,891,000 -1,931,000 1,253,000 4,835,000 -525,000 -1,892,000 826,000 393,000 509,000 -3,981,000 -929,000 4,160,000 -1,698,000 766,000 -3,253,000 294,000 
          accrued expenses and other current liabilities
        -17,477,000 64,000 16,134,000 -6,358,000 -6,631,000 3,968,000 14,015,000 3,878,000 -14,774,000 -2,111,000 14,414,000 -2,574,000 -10,653,000 6,505,000 10,773,000 2,430,000 -13,815,000 11,211,000 5,305,000 435,000 -2,075,000 4,107,000 6,668,000 2,314,000 -10,014,000 4,342,000 5,498,000 2,189,000 -6,240,000 4,475,000 1,073,000 6,804,000 -7,935,000 2,061,000 2,141,000 387,000 -2,469,000 1,978,000 
          deferred revenue
        -9,455,000 43,563,000 -16,575,000 10,272,000 -8,024,000 37,819,000 -11,049,000 4,028,000 -11,830,000 42,536,000 -2,290,000 2,845,000 -1,820,000 34,098,000 -1,658,000 4,666,000 -460,000 32,907,000 2,993,000 13,346,000 2,333,000 23,341,000 -1,725,000 6,079,000 -1,298,000 18,393,000 -152,000 11,254,000 3,869,000 10,774,000 775,000 6,592,000 6,558,000 11,557,000 4,990,000 521,000 8,014,000 11,947,000 
          operating lease liabilities
        -1,628,000 -1,280,000 -1,353,000 -1,729,000 -1,510,000 -1,563,000 -1,159,000 -1,531,000 -1,710,000 -1,936,000 -1,723,000 -1,858,000 -1,654,000 -1,620,000 -1,223,000 -2,666,000 -1,440,000 -1,299,000 -1,432,000 -1,364,000 -1,058,000 -1,277,000 -1,343,000 -1,138,000 -1,253,000 -1,533,000 -1,299,000 -1,358,000 -1,340,000          
          lease incentive receipts
         30,000       159,000 162,000                        
          other long-term liabilities
        210,000 30,000 -5,504,000 3,397,000 2,000,000 138,000 -191,000 134,000 15,000 354,000 200,000 498,000 -3,302,000 1,275,000 1,207,000 2,353,000 1,006,000             -173,000 -159,000 -145,000 340,000 -59,000 -14,000 -139,000 25,000 -599,000 
          net cash from operating activities
        46,296,000 26,680,000 63,800,000 32,345,000 46,742,000 43,794,000 55,919,000 40,698,000 50,425,000 42,169,000 37,026,000 24,551,000 22,867,000 25,754,000 24,176,000 5,907,000 176,000 22,126,000 17,074,000 12,388,000 28,505,000 14,812,000 21,789,000 9,617,000 8,517,000 8,224,000 9,854,000 8,620,000 3,026,000 4,823,000 4,814,000 4,681,000 1,822,000 2,750,000 3,507,000 1,872,000 -1,705,000 -5,857,000 
          capital expenditures
        -10,528,000 -6,800,000 -6,793,000 -6,960,000 -14,118,000 -7,269,000 -6,508,000 -6,314,000 -6,749,000 -6,833,000 -5,617,000 -6,592,000 -8,555,000 -5,488,000 -7,625,000 -10,884,000  -6,828,000 -7,280,000 -4,420,000 -5,286,000 -6,906,000 -3,304,000 -3,833,000 -3,610,000 -2,593,000 -2,793,000 -2,253,000 -2,335,000 -2,731,000 -2,419,000 -3,522,000 -3,287,000 -1,552,000 -3,973,000 -1,530,000 -1,571,000 -944,000 
          free cash flows
        35,768,000 19,880,000 57,007,000 25,385,000 32,624,000 36,525,000 49,411,000 34,384,000 43,676,000 35,336,000 31,409,000 17,959,000 14,312,000 20,266,000 16,551,000 -4,977,000  15,298,000 9,794,000 7,968,000 23,219,000 7,906,000 18,485,000 5,784,000 4,907,000 5,631,000 7,061,000 6,367,000 691,000 2,092,000 2,395,000 1,159,000 -1,465,000 1,198,000 -466,000 342,000 -3,276,000 -6,801,000 
          cash flows from investing activities
                                              
          purchases of marketable securities
        -68,490,000 -140,030,000 -130,674,000 -92,017,000 -384,923,000 -101,143,000 -294,961,000 -360,866,000 -257,345,000 -413,874,000 -311,246,000 -428,137,000 -372,059,000 -464,199,000 -335,550,000 -72,977,000 -374,094,000 -424,877,000 -308,937,000 -149,969,000 -116,400,000 -472,416,000 -23,737,000 -39,547,000 -29,975,000 -18,906,000 -36,710,000 -36,739,000 -30,175,000 -24,963,000 -26,248,000    
          proceeds from maturities of marketable securities
        174,272,000 141,000,000 148,000,000   121,289,000 310,497,000 268,800,000 322,700,000 363,521,000 263,000,000 364,500,000 328,800,000 416,500,000 338,500,000 309,000,000 328,250,000 213,000,000 100,000,000 209,000,000 175,209,000 64,709,000 36,723,000 135,110,000 289,149,000 54,500,000 20,150,000 43,193,000 31,795,000 19,554,000 29,391,000 33,969,000 28,480,000 28,644,000 24,941,000 19,420,000 5,200,000  
          proceeds from sales of marketable securities
        1,626,000                   27,074,000 13,959,000 12,000,000            
          capitalized software development costs
        -8,411,000 -6,177,000 -6,259,000 -5,994,000 -8,167,000 -6,513,000 -6,114,000 -5,637,000 -6,450,000 -4,807,000 -4,519,000 -5,439,000 -6,879,000 -4,256,000 -5,186,000 -5,109,000 -4,657,000 -3,296,000 -3,677,000 -3,542,000 -4,021,000 -2,740,000 -2,844,000 -2,705,000 -2,289,000 -1,309,000 -1,152,000 -1,367,000 -1,232,000 -1,035,000 -1,527,000 -1,460,000 -1,653,000 -1,279,000 -1,362,000 -900,000 -1,083,000 -944,000 
          purchases of property and equipment
        -2,117,000 -623,000 -534,000 -966,000 -5,951,000 -756,000 -394,000 -677,000 -299,000 -2,026,000 -1,098,000 -1,153,000 -1,676,000 -1,232,000 -2,439,000 -5,775,000 -1,528,000 -3,532,000 -3,475,000 -626,000 -1,096,000 -3,998,000 -291,000 -1,072,000 -1,152,000 -1,171,000 -1,472,000 -886,000 -1,103,000 -1,696,000 -892,000 -2,062,000 -1,634,000 -273,000 -2,611,000 -630,000 -488,000  
          net cash from investing activities
        96,880,000 -21,804,000 10,533,000 -14,977,000 -399,041,000 114,020,000 303,989,000 485,441,000 20,990,000 -4,187,000 -11,329,000 -55,966,000 8,999,000 -17,125,000 -41,184,000 -166,083,000 -171,223,000 133,195,000 -281,246,000 -220,045,000 -138,845,000 -62,828,000 -87,845,000 142,959,000 181,308,000 -420,396,000 11,068,000 1,393,000 -515,000 -2,083,000 -2,620,000 -6,292,000 -4,982,000 2,129,000 -5,280,000 -7,509,000 3,629,000 -84,552,000 
          cash flows from financing activities
                                              
          purchase of additional redeemable non-controlling interest
        -3,291,000                                      
          repayment of convertible senior notes
        -230,196,000                                     
          principal payments under finance lease obligations
        -3,000 -3,000 -3,000 -3,000 -57,000 -228,000 -255,000 -258,000 -258,000 -255,000 -250,000 -244,000 -241,000 -239,000 -185,000 -89,000 -106,000                      
          repurchases of common stock
        -45,990,000 -34,816,000 -111,944,000 -43,332,000 -45,451,000                            -16,000      
          proceeds from exercises of stock options
        59,000 64,000 133,000 2,882,000 2,136,000 4,553,000 400,000 2,324,000 314,000 775,000 7,067,000 9,509,000 2,411,000 1,018,000 1,249,000 1,031,000 1,389,000 3,749,000 2,629,000 2,899,000 2,151,000 6,351,000 3,871,000 5,760,000 4,656,000 2,200,000 3,806,000 1,801,000 2,764,000 484,000 7,455,000 2,612,000 3,453,000 1,580,000 2,911,000 5,696,000 65,000  
          proceeds from exercises of stock options - redeemable non-controlling interest
        152,000                                      
          acquisition of common stock for tax withholding obligations
        -11,763,000 -2,027,000 -1,874,000 -2,052,000 -10,939,000 -3,861,000 -1,220,000 -1,403,000 -10,981,000 -885,000 -722,000 -1,019,000 -12,403,000 -1,678,000 -1,864,000 -1,815,000 -4,187,000 -4,358,000 -2,713,000 -4,802,000 -5,134,000 -2,058,000 -1,272,000 -1,294,000 -3,562,000 -568,000 -784,000 -859,000 -1,729,000 -31,000 -112,000        
          net cash from financing activities
        -291,032,000 -34,201,000 -113,688,000 -37,913,000 -54,311,000 3,221,000 -251,737,000 -240,704,000 -10,925,000 -3,253,000 6,095,000 13,537,000 -10,233,000 1,631,000 -800,000 3,509,000 -2,904,000 5,348,000 -212,000 2,730,000 591,374,000 7,489,000 2,430,000 8,018,000 925,000 4,262,000 443,866,000 3,349,000 1,035,000 4,770,000 7,343,000 -585,000 2,994,000 1,580,000 2,911,000 5,696,000 -594,000 92,941,000 
          effect of foreign currency exchange rate changes on cash, cash equivalents, and restricted cash
        -137,000 -355,000 -147,000 170,000 240,000 -403,000 477,000 -209,000 -212,000 151,000 -64,000 -166,000 -41,000 215,000 -146,000 -416,000 -271,000 -113,000 3,000 6,000 -210,000 90,000 88,000   -47,000 144,000 220,000 -56,000          
          net decrease in cash, cash equivalents, and restricted cash
        -147,993,000                                      
          cash, cash equivalents, and restricted cash, beginning of period
        390,220,000 886,147,000 271,363,000 201,207,000 539,991,000 367,913,000 120,502,000 46,455,000 31,504,000      
          cash, cash equivalents, and restricted cash, end of period
        242,227,000 -29,680,000 -39,502,000 -20,375,000 479,777,000 160,632,000 108,648,000 285,226,000 331,641,000 34,880,000 31,728,000 -18,044,000 222,799,000 10,475,000 -17,954,000 -157,083,000 365,769,000 160,556,000 -264,381,000 -204,921,000 848,737,000 -40,437,000 -63,538,000 160,636,000 311,252,000 -407,957,000 464,932,000 13,582,000 49,945,000 7,776,000 9,537,000 -2,196,000 31,338,000      
          reconciliation of cash, cash equivalents, and restricted cash to the condensed consolidated balance sheets
                                              
          cash and cash equivalents at end of period
        242,041,000 -29,866,000 -39,241,000 -20,395,000 479,536,000 160,649,000 108,637,000 285,228,000 331,401,000 34,869,000 31,734,000 -18,043,000 222,557,000 10,454,000 -17,940,000 -157,068,000 365,522,000 160,762,000 -264,366,000 -204,925,000 848,268,000 -40,657,000 -63,550,000 160,631,000 310,989,000 -407,965,000 464,942,000 13,579,000 49,676,000 7,780,000 9,719,000        
          restricted cash included within prepaid expenses and other current assets at end of period
        186,000                  -5,000 208,000 208,000 1,000 -1,000 19,000 1,000            
          restricted cash included within other assets at end of period
           20,000 241,000 -17,000 11,000 -2,000 240,000 11,000 -6,000 -1,000 242,000 21,000 -14,000 -15,000 247,000 -3,000 -10,000 4,000 261,000 12,000 11,000 6,000 244,000   -16,000 269,000 -4,000 18,000        
          total cash, cash equivalents, and restricted cash at end of period shown in the condensed consolidated statements of cash flows
        242,227,000  -39,502,000 -20,375,000 479,777,000                                  
          change in fair value of contingent consideration
                 -11,120,000 -25,535,000 3,106,000 -21,017,000 1,745,000 -14,042,000 -1,816,000 668,000 -10,346,000 -782,000 7,702,000 176,000 -72,000 -221,000 145,000 -267,000 129,000 193,000 -9,000 163,000 97,000 78,000 112,000 261,000 178,000 96,000 93,000 93,000 
          gain on extinguishment of convertible senior notes
                                            
          changes in operating assets and liabilities, net of impact of acquisition:
                                              
          contingent consideration paid in excess of original estimates
                                              
          acquisition, net of cash acquired
                 -9,000    -157,738,000                     
          proceeds from issuance of convertible senior notes, net of issuance costs
             -662,000           -312,000 1,129,106,000                 
          partial repurchase of convertible senior notes
                       -432,230,000                  
          purchase of capped calls related to convertible senior notes
                       -102,350,000                 
          proceeds from employee stock purchase plan
         2,581,000   2,757,000   2,719,000   2,530,000   3,823,000   3,364,000   2,743,000            
          payment of contingent consideration for the 2013 acquisition
                                              
          net increase in cash, cash equivalents, and restricted cash
         -29,680,000 -39,502,000 -20,375,000 -406,370,000 160,632,000 108,648,000 285,226,000 60,278,000 34,880,000 31,728,000 -18,044,000 21,592,000 10,475,000 -17,954,000 -157,083,000 -174,222,000 160,556,000 -264,381,000 -204,921,000 480,824,000 -40,437,000 -63,538,000 160,636,000 190,750,000 -407,957,000 464,932,000 13,582,000 3,490,000 7,776,000 9,537,000 -2,196,000 -166,000      
          reconciliation of cash, cash equivalents, and restricted cash to the consolidated balance sheets
                                              
          total cash, cash equivalents, and restricted cash at end of period shown in the consolidated statements of cash flows
             160,632,000 108,648,000 285,226,000 331,641,000 34,880,000 31,728,000 -18,044,000 222,799,000 10,475,000 -17,954,000 -157,083,000 365,769,000 160,556,000 -264,381,000 -204,921,000 848,737,000 -40,437,000 -63,538,000 160,636,000 311,252,000   13,582,000 49,945,000 7,776,000 9,537,000        
          impairment of cloud computing implementation costs
                                              
          financed purchases of property and equipment
                       -128,000 -252,000 -169,000 -168,000 -169,000 -56,000 -169,000 -113,000 -169,000            
          loss on extinguishment of convertible senior notes
                          7,012,000                  
          amortization of purchase discounts on marketable securities
                    -7,519,000    95,000        -523,000              
          investment from redeemable non-controlling interest
                                              
          adjustments to reconcile net loss to net cash from operating activities:
                                              
          net loss attributable to blackline, inc.
                    -12,008,000 11,304,000 -20,019,000 -10,665,000 -10,011,000 -37,010,000 -13,741,000 -25,446,000 -38,964,000 -16,985,000 -8,751,000 -8,332,000 -12,843,000 -9,485,000 -9,242,000 -5,225,000 -8,583,000          
          net gain and adjustment attributable to redeemable non-controlling interest
                    5,277,000                          
          net loss
                    -6,731,000 10,499,000 -18,988,000 -11,971,000 -13,431,000 -32,476,000 -9,718,000 -25,576,000 -33,224,000 -12,634,000 -7,857,000 -7,941,000 -10,970,000 -9,011,000 -8,912,000 -5,390,000 -8,833,000 -7,794,000 -4,460,000 -8,457,000 -7,155,000 -5,845,000 -13,092,000 -10,114,000 -9,010,000 -15,664,000 
          net loss and adjustment attributable to redeemable non-controlling interest
                     -805,000 1,031,000 -1,306,000 -3,420,000 4,534,000 4,023,000 -130,000 5,740,000 4,351,000 894,000 391,000 1,873,000 474,000 330,000            
          amortization of debt discount and issuance costs
                     1,392,000 1,389,000 1,373,000 1,357,000 16,266,000 16,031,000 15,590,000 7,651,000 5,815,000 5,758,000 5,584,000 5,532,000 5,487,000             
          loss on extinguishment of convertible notes
                                              
          non-cash lease expense
                                              
          purchases of intangible assets
                                            
          principal payments on finance lease obligations
                                              
          cash paid for pending acquisition
                                              
          provision for doubtful accounts receivable
                           -18,000 -8,000  233,000 71,000 69,000 84,000 48,000 25,000 -65,000   -51,000 -37,000     
          principal payments on capital lease obligations
                                     -443,000 -549,000 
          change in fair value of common stock warrant liability
                                         2,490,000 1,000,000 6,180,000 
          amortization of purchase discounts/premiums on marketable securities
                                    -409,000 -326,000 -298,000 -237,000 -67,000 -63,000 -33,000 70,000 63,000  
          payments of initial public offering costs
                                         -110,000  
          accretion of purchase discounts/premiums on marketable securities
                                              
          net loss attributable to redeemable non-controlling interest
                                    -250,000          
          accretion of debt discount and accrual of paid-in-kind interest
                                              
          payment of paid-in-kind interest
                                              
          proceeds from term loan, net of issuance costs
                                             -169,000 
          principal payments on term loan and prepayment penalties
                                              
          proceeds from issuance of common stock
                                             
          proceeds from initial public offering, net of underwriting discounts and commissions
                                              
          * see note 3 for a summary of adjustments.
                                              
          benefit from doubtful accounts receivable
                                              
          changes in operating assets and liabilities, net of effects of the acquisition:
                                              
          cash and cash equivalents
                                        30,864,000      
          restricted cash included within prepaid expenses and other current assets
                                        200,000      
          restricted cash included within other assets
                                        274,000      
          total cash, cash equivalents, and restricted cash
                                        31,338,000      
          deferred sales commissions
                                         -2,699,000 -1,101,000 -312,000 134,000 -2,438,000 
          net increase in cash and cash equivalents
                                         6,459,000 1,138,000 59,000 1,330,000 2,532,000 
          cash and cash equivalents, beginning of period
                                         22,118,000 
          cash and cash equivalents, end of period
                                         6,459,000 1,138,000 59,000 23,448,000 2,532,000 
          accretion of debt discount and accrual of paid in kind interest
                                              
          payment of paid in kind interest
                                              
          investments in marketable securities
                                              
          accretion of debt discount and paid in kind interest
                                              
          purchase of property and equipment
                                              
          payments of deferred offering costs
                                              
          repurchase of common stock
                                              
          proceeds from exercise of stock options