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Ambarella Quarterly Balance Sheets Chart

Quarterly
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Annual
 
 Goodwill  
 Account Receivables  
 Cash and Cash Eq  
 Account Payables  
 Deferred Revenue  
 Inventory  
20201031 20210131 20210430 20210731 20211031 20220131 20220430 20220731 20221031 20230131 20230430 20230731 20231031 20240131 20240430 20240731 20241031 20250131 20250430 20250731 065.39130.79196.18261.58326.97392.37457.76Milllion

Ambarella Quarterly Balance Sheets Table

Quarterly
 | 
Annual
 
Unit: USD2025-07-31 2025-04-30 2025-01-31 2024-10-31 2024-07-31 2024-04-30 2024-01-31 2023-10-31 2023-07-31 2023-04-30 2023-01-31 2022-10-31 2022-07-31 2022-04-30 2022-01-31 2021-10-31 2021-07-31 2021-04-30 2021-01-31 2020-10-31 2020-07-31 2020-04-30 2020-01-31 2019-10-31 2019-07-31 2019-04-30 2019-01-31 2018-10-31 2018-07-31 2018-04-30 2018-01-31 2017-10-31 2017-07-31 2017-04-30 2017-01-31 2016-10-31 2016-07-31 2016-04-30 2016-01-31 2015-10-31 2015-07-31 2015-04-30 2015-01-31 2014-10-31 2014-07-31 2014-04-30 2014-01-31 2013-10-31 2013-07-31 2013-04-30 2013-01-31 2012-10-31 
                                                      
  assets                                                    
  current assets:                                                    
  cash and cash equivalents142,739,000 141,285,000 144,622,000 127,122,000 153,925,000 131,810,000 144,914,000 143,787,000 122,515,000 127,741,000 113,541,000 112,837,000 194,944,000 200,639,000 171,043,000 457,760,000 258,402,000 227,509,000 241,274,000 225,508,000 220,647,000 236,585,000 231,403,000 252,310,000 222,693,000 204,444,000 194,047,000 212,338,000 295,289,000 336,692,000 346,672,000 320,933,000 309,738,000 335,182,000 322,872,000 313,455,000 276,507,000 267,959,000 268,056,000 236,465,000 199,577,000 197,311,000 170,291,000 146,577,000 128,263,000 129,480,000       
  marketable debt securities118,444,000 118,102,000 105,643,000 99,402,000 65,880,000 71,537,000 75,013,000 78,549,000 93,997,000 99,647,000 93,322,000 86,197,000 2,970,000    190,757,000 208,020,000 199,434,000 198,129,000 190,056,000 174,742,000 173,345,000 148,481,000 153,109,000 161,732,000 164,861,000                          
  accounts receivable42,896,000 30,235,000 29,767,000 33,967,000 23,160,000 28,299,000 24,950,000 22,968,000 30,158,000 29,825,000 51,987,000 48,556,000 37,698,000 28,008,000 44,307,000 44,776,000 38,295,000 34,528,000 24,974,000 24,111,000 23,275,000 20,684,000 18,487,000 21,609,000 27,940,000 26,457,000 26,212,000 32,417,000 29,007,000 25,727,000 31,294,000 47,197,000 38,351,000 22,871,000 38,596,000 41,394,000 33,588,000 30,501,000 39,408,000 46,282,000 42,137,000 39,193,000 40,180,000 40,965,000 26,833,000 21,305,000 18,837,000 25,449,000 21,881,000 23,467,000 20,153,000 18,243,000 
  inventories33,808,000 39,289,000 34,428,000 36,592,000 30,660,000 28,325,000 29,043,000 30,783,000 34,770,000 41,223,000 40,486,000 45,395,000 40,103,000 41,523,000 45,219,000 47,039,000 42,076,000 33,120,000 26,081,000 23,712,000 23,907,000 21,957,000 22,971,000 19,845,000 17,376,000 17,635,000 18,252,000 23,328,000 30,787,000 22,968,000 23,383,000 21,097,000 17,726,000 19,066,000 20,145,000 23,340,000 20,898,000 17,921,000 18,167,000 22,788,000 27,773,000 25,803,000 21,693,000 14,839,000 13,003,000 10,034,000 10,452,000 13,010,000 9,913,000 9,325,000 8,918,000 9,141,000 
  restricted cash442,000 441,000 7,000 7,000 7,000 7,000 7,000 7,000 8,000 8,000 8,000 7,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 10,000 9,000 9,000 9,000 9,000 11,000 11,000 11,000 9,000 9,000 9,000 9,000 9,000 9,000 8,000 8,000 8,000 8,000 7,000 8,000 8,000 8,000 8,000 3,000 3,000 5,000 3,000 3,000 3,000 3,000 3,000 270,000 
  prepaid expenses and other current assets5,543,000 6,197,000 6,084,000 6,520,000 6,051,000 6,929,000 6,230,000 3,728,000 5,199,000 6,077,000 5,288,000 5,338,000 7,138,000 8,149,000 6,169,000 5,789,000 4,481,000 5,361,000 5,531,000 4,777,000 3,503,000 4,789,000 4,975,000 5,174,000 4,491,000 5,025,000 6,206,000 3,309,000 2,686,000 3,824,000 4,006,000 4,008,000 2,810,000 3,304,000 4,392,000 4,762,000 4,180,000 3,845,000 4,170,000 3,591,000 2,228,000 2,688,000 3,506,000 2,256,000 2,227,000 2,621,000 2,951,000 1,998,000 1,478,000 1,839,000 2,360,000 1,516,000 
  total current assets343,872,000 335,549,000 320,551,000 303,610,000 279,683,000 266,907,000 280,157,000 279,822,000 286,647,000 304,521,000 304,632,000 298,330,000 282,863,000 278,329,000 266,748,000 555,374,000 534,021,000 508,548,000 497,304,000 476,247,000 461,398,000 458,766,000 451,190,000 447,428,000 425,618,000 415,304,000 409,589,000 407,682,000 438,449,000 466,647,000 493,283,000 486,329,000 459,711,000 465,418,000 468,535,000 441,604,000 385,701,000 376,086,000 369,645,000 351,379,000 313,919,000 304,978,000 275,371,000 246,447,000 210,193,000 191,180,000 177,236,000 169,584,000 152,804,000 140,130,000 133,148,000 125,323,000 
  property and equipment10,092,000 10,248,000 9,084,000 9,684,000 9,042,000 9,763,000 10,439,000 10,917,000 11,246,000 11,279,000 11,814,000 10,753,000 10,443,000 10,138,000 10,134,000 8,498,000 8,237,000 6,308,000 5,530,000 5,131,000 5,027,000 5,401,000 5,614,000 5,927,000 6,105,000 6,383,000 6,728,000 6,746,000 7,010,000 6,645,000 6,449,000 5,666,000 5,636,000 5,241,000 4,988,000 4,291,000 3,642,000 3,567,000 3,448,000 3,215,000 2,891,000 3,022,000 3,075,000 3,182,000 3,080,000 2,950,000 3,018,000 3,025,000 3,219,000 2,976,000 2,536,000 2,283,000 
  intangible assets41,879,000 44,895,000 47,279,000 44,962,000 48,404,000 51,099,000 55,136,000 58,805,000 63,121,000 55,535,000 58,497,000 47,550,000 49,563,000 48,477,000 46,302,000 15,267,000 15,800,000 17,291,000 18,703,000 17,352,000 16,088,000 16,391,000 17,826,000 8,232,000 9,008,000 10,134,000 10,936,000 11,222,000 12,366,000 13,271,000 14,417,000 15,241,000 12,970,000 13,613,000 4,149,000 4,162,000 4,173,000 4,173,000 4,178,000 4,124,000 4,107,000            
  operating lease right-of-use assets3,500,000 4,377,000 5,188,000 5,952,000 6,744,000 4,324,000 5,250,000 5,760,000 6,626,000 7,485,000 8,339,000 9,186,000 10,263,000 10,292,000 11,127,000 11,958,000 10,066,000 10,775,000 9,659,000 8,734,000 8,691,000 9,272,000 9,935,000 10,595,000 7,237,000 7,911,000                           
  goodwill303,625,000 303,625,000 303,625,000 303,625,000 303,625,000 303,625,000 303,625,000 303,625,000 303,625,000 303,625,000 303,625,000 303,625,000 303,625,000 303,625,000 303,625,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000 26,601,000            
  other non-current assets3,463,000 3,224,000 3,241,000 2,956,000 2,673,000 2,827,000 2,814,000 2,748,000 2,795,000 3,906,000 4,012,000 3,428,000 3,504,000 3,834,000 4,269,000 4,190,000 4,634,000 4,634,000 4,569,000 5,027,000 5,381,000 5,359,000 5,710,000 5,386,000 5,246,000 2,352,000 2,412,000 2,470,000 2,536,000 2,338,000 2,257,000 2,214,000 2,229,000 2,168,000 2,224,000 2,162,000 1,998,000                
  total assets706,431,000 701,918,000 688,968,000 670,789,000 650,334,000 638,660,000 657,655,000 684,629,000 696,244,000 704,781,000 710,195,000 687,457,000 674,420,000 668,665,000 657,545,000 633,355,000 610,058,000 584,638,000 573,280,000 549,555,000 533,398,000 531,733,000 527,276,000 514,489,000 490,232,000 479,251,000 466,853,000 458,648,000 490,722,000 519,152,000 546,649,000 542,587,000 513,446,000 519,069,000 512,271,000 484,844,000 427,858,000 419,053,000 410,615,000 391,292,000 353,677,000 313,928,000 284,284,000 253,278,000 216,420,000 197,263,000 183,307,000 175,684,000 159,153,000 146,239,000 138,603,000 129,552,000 
  liabilities and shareholders' equity                                                    
  current liabilities:                                                    
  accounts payable26,783,000 35,290,000 21,775,000 25,227,000 19,443,000 16,470,000 28,503,000 9,298,000 11,943,000 25,625,000 17,845,000 29,130,000 22,074,000 29,763,000 31,170,000 27,071,000 33,116,000 20,644,000 21,124,000 14,613,000 13,693,000 20,589,000 14,910,000 18,697,000 18,912,000 16,055,000 12,801,000 11,134,000 23,381,000 17,449,000 19,815,000 26,208,000 23,466,000 18,699,000 19,955,000 28,364,000 19,723,000 16,347,000 14,175,000 22,621,000 20,314,000 23,990,000 21,036,000 20,830,000 14,424,000 13,408,000 8,321,000 14,139,000 11,440,000 9,987,000 6,674,000 9,345,000 
  accrued and other current liabilities76,190,000 73,479,000 80,781,000 72,974,000 62,400,000 49,714,000 48,598,000 57,991,000 54,032,000 46,011,000 56,655,000 43,561,000 48,396,000 39,354,000 52,064,000 48,909,000 46,906,000 44,897,000 48,126,000 41,922,000 33,156,000 27,262,000 34,970,000 28,447,000 24,432,000 22,523,000 24,700,000 25,615,000 23,090,000 21,271,000 32,178,000 26,578,000 19,906,000 20,929,000                   
  operating lease liabilities, current1,774,000 2,335,000 2,829,000 3,251,000 3,652,000 3,148,000 3,443,000 3,553,000 3,548,000 3,567,000 3,539,000 3,425,000 3,506,000 3,293,000 3,391,000 3,494,000 2,886,000 2,992,000 2,911,000 2,809,000 2,402,000 2,101,000 2,181,000 2,161,000 2,260,000 2,390,000                           
  income taxes payable1,713,000 1,633,000 1,383,000 838,000 809,000 904,000 1,541,000 2,391,000 2,458,000 3,619,000 4,112,000 3,782,000 3,110,000 1,481,000 1,245,000 1,358,000 1,726,000 700,000 962,000 1,711,000 511,000 749,000 691,000 955,000 1,083,000 682,000 993,000 755,000 524,000 385,000 936,000 2,447,000 2,014,000 555,000 568,000 1,359,000   787,000 1,555,000 2,939,000 1,306,000 748,000 1,895,000 706,000 449,000 545,000 77,000 381,000 171,000 286,000 1,115,000 
  deferred revenue, current19,482,000 12,114,000 14,226,000 4,580,000 5,152,000 2,009,000 894,000 2,596,000 2,709,000 1,327,000 1,311,000 1,036,000 457,000 964,000 1,414,000 787,000 902,000 770,000 844,000 1,178,000 1,400,000 802,000 701,000 545,000 553,000 565,000 529,000 405,000 583,000 546,000 307,000    7,425,000   6,092,000 10,077,000 6,944,000 7,078,000 6,219,000 4,907,000 5,034,000 4,888,000 4,817,000 4,831,000 3,552,000 4,891,000 4,024,000 3,451,000 3,412,000 
  total current liabilities125,942,000 124,851,000 120,994,000 106,870,000 91,456,000 72,245,000 82,979,000 75,829,000 74,690,000 80,149,000 83,462,000 80,934,000 77,543,000 74,855,000 89,284,000 81,619,000 85,536,000 70,003,000 73,967,000 62,233,000 51,162,000 51,503,000 53,453,000 50,805,000 47,240,000 42,215,000 39,023,000 37,909,000 47,578,000 39,651,000 53,236,000 60,452,000 51,589,000 45,738,000 54,396,000 59,940,000 48,310,000 39,834,000 48,817,000 49,529,000 54,706,000 46,930,000 45,482,000 42,605,000 32,362,000 28,008,000 25,402,000 29,834,000 28,889,000 25,366,000 24,830,000 26,463,000 
  operating lease liabilities, non-current1,668,000 2,056,000 2,436,000 2,716,000 3,101,000 1,243,000 1,896,000 2,316,000 3,216,000 4,163,000 5,097,000 5,897,000 7,024,000 7,438,000 8,322,000 9,053,000 7,763,000 8,475,000 7,525,000 6,662,000 6,911,000 7,386,000 7,975,000 8,519,000 5,100,000 5,635,000                           
  other long-term liabilities2,301,000 2,295,000 4,126,000 6,908,000 8,226,000 9,747,000 12,909,000 14,696,000 16,020,000 14,278,000 15,548,000 12,228,000 11,742,000 12,024,000 12,763,000 13,448,000 13,705,000 14,866,000 16,812,000 18,007,000 16,678,000 17,261,000 17,776,000 9,925,000 9,431,000 8,963,000 8,341,000 9,600,000 10,252,000 10,693,000 11,226,000 13,071,000 9,131,000 9,002,000 3,241,000 2,291,000 2,793,000 2,767,000 12,342,000 9,394,000 2,704,000 1,405,000 1,393,000 1,175,000 1,569,000 1,556,000 1,544,000 1,427,000 1,461,000 1,470,000 1,441,000 1,115,000 
  total liabilities129,911,000 129,202,000 127,556,000 116,494,000 102,783,000 83,235,000 97,784,000 92,841,000 93,926,000 98,590,000 104,107,000 99,059,000 96,309,000 94,317,000 110,369,000 104,120,000 107,004,000 93,344,000 98,304,000 86,902,000 74,751,000 76,150,000 79,204,000 69,249,000 61,771,000 56,813,000 47,364,000 47,509,000 57,830,000 50,344,000 64,462,000 73,523,000 60,720,000 54,740,000 57,637,000 62,231,000 51,103,000 42,601,000 61,159,000 58,923,000 57,504,000 48,522,000 47,073,000 43,924,000 34,109,000 29,564,000 26,946,000 31,261,000 30,350,000 26,836,000 26,271,000 27,578,000 
  commitments and contingencies                                                    
  shareholders' equity:                                                    
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at july 31, 2025 and january 31, 2025, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized; 42,674,711 and 41,963,959 shares issued and outstanding at july 31, 2025 and january 31, 2025, respectively19,000                                                    
  additional paid-in capital872,822,000 848,756,000 813,683,000 786,396,000 755,449,000 728,842,000 694,967,000 667,313,000 635,844,000 607,971,000 572,076,000 543,833,000 512,696,000 485,281,000 447,287,000 420,153,000 394,121,000 375,021,000 347,458,000 322,502,000 301,195,000 284,557,000 261,220,000 245,490,000 224,542,000 208,522,000 188,516,000 175,906,000 188,663,000 217,880,000 221,186,000 209,161,000 204,513,000 219,425,000 212,276,000 198,554,000 181,690,000 190,031,000 176,306,000 164,324,000 157,598,000 149,921,000 140,564,000 130,394,000 121,686,000 116,355,000 110,285,000 103,880,000 97,387,000 94,241,000 91,911,000 85,196,000 
  accumulated other comprehensive income59,000 326,000               608,000 792,000 1,219,000 1,363,000 1,587,000 405,000 768,000 685,000 545,000 351,000 97,000          33,000 20,000     -1,000 -14,000 -21,000 8,000       
  accumulated deficit-296,380,000 -276,385,000 -252,057,000 -231,823,000 -207,752,000 -172,863,000                                               
  total shareholders’ equity576,520,000 572,716,000 561,412,000 554,295,000 547,551,000 555,425,000 559,871,000 591,788,000 602,318,000 606,191,000 606,088,000 588,398,000 578,111,000 574,348,000 547,176,000 529,235,000 503,054,000 491,294,000 474,976,000 462,653,000 458,647,000 455,583,000 448,072,000 445,240,000 428,461,000 422,438,000 419,489,000 411,139,000 432,892,000 468,808,000 482,187,000 469,064,000 452,726,000 464,329,000 454,634,000 422,613,000 376,755,000 376,452,000 349,456,000 332,369,000 296,173,000 265,406,000 237,211,000 209,354,000 182,311,000 167,699,000 156,361,000 144,423,000 128,803,000 119,403,000 112,332,000 101,974,000 
  total liabilities and shareholders' equity706,431,000 701,918,000 688,968,000 670,789,000 650,334,000 638,660,000 657,655,000 684,629,000 696,244,000 704,781,000 710,195,000 687,457,000 674,420,000 668,665,000 657,545,000 633,355,000 610,058,000 584,638,000 573,280,000 549,555,000 533,398,000 531,733,000 527,276,000 514,489,000 490,232,000 479,251,000 466,853,000 458,648,000 490,722,000 519,152,000 546,649,000 542,587,000 513,446,000 519,069,000 512,271,000 484,844,000 427,858,000 419,053,000 410,615,000 391,292,000 353,677,000 313,928,000 284,284,000          
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at april 30, 2025 and january 31, 2025, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized; 42,413,608 and 41,963,959 shares issued and outstanding at april 30, 2025 and january 31, 2025, respectively 19,000                                                   
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at january 31, 2025 and january 31, 2024, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized; 41,963,959 and 40,520,558 shares issued and outstanding at january 31, 2025 and january 31, 2024, respectively  19,000                                                  
  accumulated other comprehensive loss  -233,000 -297,000 -165,000 -572,000 -183,000 -1,219,000 -930,000 -382,000 -492,000 -1,043,000 -2,000               -185,000 -211,000 -389,000 -279,000 -116,000 -82,000 -88,000 -70,000 -18,000   -7,000 -15,000 -24,000 -17,000           
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at october 31, 2024 and january 31, 2024, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized; 41,670,716 and 40,520,558 shares issued and outstanding at october 31, 2024 and january 31, 2024, respectively   19,000                                                 
  deferred tax assets    163,000 115,000 234,000                                              
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at july 31, 2024 and january 31, 2024, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized; 41,272,671 and 40,520,558 shares issued and outstanding at july 31, 2024 and january 31, 2024, respectively    19,000                                                
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at april 30, 2024 and january 31, 2024, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized; 40,985,045 and 40,520,558 shares issued and outstanding at april 30, 2024 and january 31, 2024, respectively     18,000                                               
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at january 31, 2024 and january 31, 2023, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized; 40,520,558 and 39,043,000 shares issued and outstanding at january 31, 2024 and january 31, 2023, respectively      18,000                                              
  retained earnings      -134,931,000 -74,324,000 -32,614,000 -1,416,000 34,486,000 45,591,000 65,400,000 89,050,000 99,872,000 109,065,000 108,309,000 115,465,000 126,283,000 138,772,000 155,850,000 170,606,000 186,069,000 199,050,000 203,359,000 213,550,000 230,861,000 235,404,000 244,425,000 251,302,000 261,265,000 260,004,000 248,280,000 244,977,000 242,413,000 224,062,000 195,017,000 186,386,000 173,142,000 168,046,000 138,585,000 115,488,000 96,634,000 78,960,000 60,633,000 51,323,000 46,063,000 40,530,000 31,404,000 25,150,000 20,409,000 16,766,000 
  deferred tax assets, non-current       22,952,000 22,184,000 18,430,000 19,276,000 14,585,000 14,159,000 13,970,000 15,340,000 11,467,000 10,699,000 10,481,000 10,914,000 10,463,000 10,212,000 9,943,000 10,400,000 10,320,000 10,417,000 10,566,000 10,587,000 3,927,000 3,760,000 3,650,000 3,642,000 6,536,000 6,299,000 6,028,000 5,774,000 6,024,000 5,743,000 6,541,000 4,626,000 3,955,000 4,130,000 4,000,000 3,936,000 1,666,000 1,375,000 1,260,000 1,134,000 1,105,000 1,135,000 1,079,000 938,000 426,000 
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at october 31, 2023 and january 31, 2023, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized; 40,229,267 and 39,043,000 shares issued and outstanding at october 31, 2023 and january 31, 2023, respectively       18,000                                             
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at july 31, 2023 and january 31, 2023, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized; 39,870,771 and 39,043,000 shares issued and outstanding at july 31, 2023 and january 31, 2023, respectively        18,000                                            
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at april 30, 2023 and january 31, 2023, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized; 39,591,203 and 39,043,000 shares issued and outstanding at april 30, 2023 and january 31, 2023, respectively         18,000                                           
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at january 31, 2023 and january 31, 2022, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized; 39,043,000 and 37,302,818 shares issued and outstanding at january 31, 2023 and january 31, 2022, respectively          18,000                                          
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at october 31, 2022 and january 31, 2022, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized; 38,746,179 and 37,302,818 shares issued and outstanding at october 31, 2022 and january 31, 2022, respectively           17,000                                         
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at july 31, 2022 and january 31, 2022, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized; 38,406,451 and 37,302,818 shares issued and outstanding at july 31, 2022 and january 31, 2022, respectively            17,000                                        
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at april 30, 2022 and january 31, 2022, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at april 30, 2022 and january 31, 2022, respectively; 38,082,879 shares issued and outstanding at april 30, 2022; 37,302,818 shares issued and outstanding at january 31, 2022             17,000                                       
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at january 31, 2022 and january 31, 2021, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at january 31, 2022 and january 31, 2021, respectively; 37,302,818 shares issued and outstanding at january 31, 2022; 35,547,440 shares issued and outstanding at january 31, 2021              17,000                                      
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at october 31, 2021 and january 31, 2021, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at october 31, 2021 and january 31, 2021, respectively; 36,925,142 shares issued and outstanding at october 31, 2021; 35,547,440 shares issued and outstanding at january 31, 2021               17,000                                     
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at july 31, 2021 and january 31, 2021, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at july 31, 2021 and january 31, 2021, respectively; 36,644,636 shares issued and outstanding at july 31, 2021; 35,547,440 shares issued and outstanding at january 31, 2021                16,000                                    
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at april 30, 2021 and january 31, 2021, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at april 30, 2021 and january 31, 2021, respectively; 36,273,343 shares issued and outstanding at april 30, 2021; 35,547,440 shares issued and outstanding at january 31, 2021                 16,000                                   
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at january 31, 2021 and january 31, 2020, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at january 31, 2021 and january 31, 2020, respectively; 35,547,440 shares issued and outstanding at january 31, 2021; 33,805,609 shares issued and outstanding at january 31, 2020                  16,000                                  
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at october 31, 2020 and january 31, 2020, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at october 31, 2020 and january 31, 2020, respectively; 35,072,089 shares issued and outstanding at october 31, 2020; 33,805,609 shares issued and outstanding at january 31, 2020                   16,000                                 
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at july 31, 2020 and january 31, 2020, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at july 31, 2020 and january 31, 2020, respectively; 34,610,836 shares issued and outstanding at july 31, 2020; 33,805,609 shares issued and outstanding at january 31, 2020                    15,000                                
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at april 30, 2020 and january 31, 2020, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at april 30, 2020 and january 31, 2020, respectively; 34,342,097 shares issued and outstanding at april 30, 2020; 33,805,609 shares issued and outstanding at january 31, 2020                     15,000                               
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at january 31, 2020 and january 31, 2019, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at january 31, 2020 and january 31, 2019, respectively; 33,805,609 shares issued and outstanding at january 31, 2020; 32,303,540 shares issued and outstanding at january 31, 2019                      15,000                              
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at october 31, 2019 and january 31, 2019, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at october 31, 2019 and january 31, 2019, respectively; 33,540,324 shares issued and outstanding at october 31, 2019; 32,303,540 shares issued and outstanding at january 31, 2019                       15,000                             
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at july 31, 2019 and january 31, 2019, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at july 31, 2019 and january 31, 2019, respectively; 33,033,619 shares issued and outstanding at july 31, 2019; 32,303,540 shares issued and outstanding at january 31, 2019                        15,000                            
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at april 30, 2019 and january 31, 2019, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at april 30, 2019 and january 31, 2019, respectively; 32,738,600 shares issued and outstanding at april 30, 2019; 32,303,540 shares issued and outstanding at january 31, 2019                         15,000                           
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at january 31, 2019 and january 31, 2018, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at january 31, 2019 and january 31, 2018, respectively; 32,303,540 shares issued and outstanding at january 31, 2019; 33,489,614 shares issued and outstanding at january 31, 2018                          15,000                          
  marketable securities                           136,279,000 80,671,000 77,427,000 87,919,000 93,085,000 91,077,000 84,986,000 82,522,000 58,645,000 50,520,000 55,852,000 39,837,000 40,255,000 40,177,000 37,917,000 37,703,000 39,951,000 38,265,000 26,136,000       
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at october 31, 2018 and january 31, 2018, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at october 31, 2018 and january 31, 2018, respectively; 32,149,520 shares issued and outstanding at october 31, 2018; 33,489,614 shares issued and outstanding at january 31, 2018                           14,000                         
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at july 31, 2018 and january 31, 2018, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at july 31, 2018 and january 31, 2018, respectively; 32,650,237 shares issued and outstanding at july 31, 2018; 33,489,614 shares issued and outstanding at january 31, 2018                            15,000                        
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at april 30, 2018 and january 31, 2018, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at april 30, 2018 and january 31, 2018, respectively; 33,396,304 shares issued and outstanding at april 30, 2018; 33,489,614 shares issued and outstanding at january 31, 2018                             15,000                       
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at january 31, 2018 and january 31, 2017, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at january 31, 2018 and january 31, 2017, respectively; 33,489,614 shares issued and outstanding at january 31, 2018; 33,369,032 shares issued and outstanding at january 31, 2017                              15,000                      
  deferred revenue                               5,219,000 6,203,000 5,555,000  6,885,000 5,464,000                
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at october 31, 2017 and january 31, 2017, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at october 31, 2017 and january 31, 2017, respectively; 33,296,091 shares issued and outstanding at october 31, 2017; 33,369,032 shares issued and outstanding at january 31, 2017                               15,000                     
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at july 31, 2017 and january 31, 2017, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at july 31, 2017 and january 31, 2017, respectively; 33,220,378 shares issued and outstanding at july 31, 2017; 33,369,032 shares issued and outstanding at january 31, 2017                                15,000                    
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at april 30, 2017 and january 31, 2017, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at april 30, 2017 and january 31, 2017, respectively; 33,534,253 shares issued and outstanding at april 30, 2017; 33,369,032 shares issued and outstanding at january 31, 2017                                 15,000                   
  accrued liabilities                                  26,448,000 23,332,000 23,123,000 17,395,000 23,778,000 18,324,000 24,303,000 15,343,000 18,699,000 14,846,000 12,344,000 9,334,000 11,705,000 12,066,000 12,177,000 11,184,000 14,419,000 12,591,000 
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at january 31, 2017 and january 31, 2016, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at january 31, 2017 and january 31, 2016, respectively; 33,369,032 shares issued and outstanding at january 31, 2017; 32,333,359 shares issued and outstanding at january 31, 2016                                  15,000                  
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at october 31, 2016 and january 31, 2016, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at october 31, 2016 and january 31, 2016, respectively; 33,105,541 shares issued and outstanding at october 31, 2016; 32,333,359 shares issued and outstanding at january 31, 2016                                   15,000                 
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at july 31, 2016 and january 31, 2016, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at july 31, 2016 and january 31, 2016, respectively; 32,677,136 shares issued and outstanding at july 31, 2016; 32,333,359 shares issued and outstanding at january 31, 2016                                    15,000                
  other assets                                     2,085,000 2,117,000 2,018,000 2,029,000 1,928,000 1,902,000 1,983,000 1,772,000 1,873,000 1,919,000 1,970,000 1,995,000 2,054,000 1,981,000 1,520,000 
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at april 30, 2016 and january 31, 2016, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at april 30, 2016 and january 31, 2016, respectively; 32,839,779 shares issued and outstanding at april 30, 2016; 32,333,359 shares issued and outstanding at january 31, 2016                                     15,000               
  deferred tax assets, current                                       1,990,000 2,019,000 2,058,000 1,990,000 1,856,000 1,599,000 1,599,000 1,599,000 1,073,000 1,219,000 1,219,000 1,220,000 1,333,000 
  deferred tax liabilities, current                                       85,000 72,000 72,000 92,000          
  deferred revenue, non-current                                        94,000 187,000 198,000 144,000 178,000        
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at january 31, 2016 and january 31, 2015, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at january 31, 2016 and january 31, 2015, respectively; 32,333,359 shares issued and outstanding at january 31, 2016; 30,837,529 shares issued and outstanding at january 31, 2015                                      15,000              
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at october 31, 2015 and january 31, 2015, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at october 31, 2015 and january 31, 2015, respectively; 32,049,374 shares issued and outstanding at october 31, 2015; 30,837,529 shares issued and outstanding at january 31, 2015                                       14,000             
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at july 31, 2015 and january 31, 2015, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at july 31, 2015 and january 31, 2015, respectively; 31,661,906 shares issued and outstanding at july 31, 2015; 30,837,529 shares issued and outstanding at january 31, 2015                                        14,000            
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at april 30, 2015 and january 31, 2015, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at april 30, 2015 and january 31, 2015, respectively; 31,341,184 shares issued and outstanding at april 30, 2015; 30,837,529 shares issued and outstanding at january 31, 2015                                         14,000           
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at january 31, 2015 and january 31, 2014, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at january 31, 2015 and january 31, 2014, respectively; 30,837,529 shares issued and outstanding at january 31, 2015; 28,748,513 shares issued and outstanding at january 31, 2014                                          14,000          
  liabilities and shareholders’ equity                                                    
  shareholders’ equity:                                                    
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at october 31, 2014 and january 31, 2014, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at october 31, 2014 and january 31, 2014, respectively; 30,318,795 shares issued and outstanding at october 31, 2014; 28,748,513 shares issued and outstanding at january 31, 2014                                           14,000         
  total liabilities and shareholders’ equity                                           253,278,000 216,420,000 197,263,000 183,307,000 175,684,000 159,153,000 146,239,000   
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at july 31, 2014 and january 31, 2014, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at july 31, 2014 and january 31, 2014, respectively; 29,695,783 shares issued and outstanding at july 31, 2014; 28,748,513 shares issued and outstanding at january 31, 2014                                            13,000        
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at april 30, 2014 and january 31, 2014, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at april 30, 2014 and january 31, 2014, respectively; 29,224,072 shares issued and outstanding at april 30, 2014; 28,748,513 shares issued and outstanding at january 31, 2014                                             13,000       
  cash                                              143,394,000 128,051,000 118,310,000 104,277,000 100,494,000 94,820,000 
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at january 31, 2014 and january 31, 2013, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at january 31, 2014 and january 31, 2013, respectively; 28,748,513 shares issued and outstanding at january 31, 2014; 27,035,074 shares issued and outstanding at january 31, 2013                                              13,000      
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at october 31, 2013 and january 31, 2013, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at october 31, 2013 and january 31, 2013, respectively; 28,212,643 shares issued and outstanding at october 31, 2013; 27,035,074 shares issued and outstanding at january 31, 2013                                               13,000     
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at july 31, 2013 and january 31, 2013, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at july 31, 2013 and january 31, 2013, respectively; 27,557,895 shares issued and outstanding at july 31, 2013; 27,035,074 shares issued and outstanding at january 31, 2013                                                12,000    
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at april 30, 2013 and january 31, 2013, respectively                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 shares authorized at april 30, 2013 and january 31, 2013, respectively; 27,258,434 shares issued and outstanding at april 30, 2013; 27,035,074 shares issued and outstanding at january 31, 2013                                                 12,000   
  liabilities, redeemable convertible preference shares and shareholders’ equity                                                    
  redeemable convertible preference shares                                                    
  series a, b, c and d redeemable convertible preference shares, 0.00045 par value per share — 5,611,111, 3,665,550, 3,027,777 and 2,222,222 shares authorized at january 31, 2012, respectively; 5,611,107, 3,629,253, 3,027,771 and 1,047,596 shares issued and outstanding at january 31, 2012, respectively;initial liquidation preference of 10,100, 13,000, 16,350 and 11,785 at january 31, 2012, respectively                                                    
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at january 31, 2013; no shares authorized, issued and outstanding at january 31, 2012;                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 and 44,444,444 shares authorized at january 31, 2013 and at january 31, 2012, respectively; 27,035,074 shares issued and outstanding at january 31, 2013; 7,600,869 shares issued and outstanding at january 31, 2012                                                  12,000  
  total liabilities, redeemable convertible preference shares and shareholders’ equity                                                  138,603,000 129,552,000 
  series a, b, c and d redeemable convertible preference shares, 0.00045 par value per share - 5,611,111, 3,665,550, 3,027,777 and 2,222,222 shares authorized at january 31, 2012, respectively; 5,611,107, 3,629,253, 3,027,771 and 1,047,596 shares issued and outstanding at january 31, 2012, respectively; initial liquidation preference of 10,100, 13,000, 16,350 and 11,785 at january 31, 2012, respectively                                                    
  preference shares, 0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at october 31, 2012; no shares authorized, issued and outstanding at january 31, 2012;                                                    
  ordinary shares, 0.00045 par value per share, 200,000,000 and 44,444,444 shares authorized at october 31, 2012 and at january 31, 2012, respectively; 26,093,016 shares issued and outstanding at october 31, 2012; 7,600,869 shares issued and outstanding at january 31, 2012                                                   12,000 

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