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RECLASSIFICATIONS (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue | $ 93,767 | $ 89,912 | $ 85,682 | $ 83,225 | $ 79,344 | $ 75,575 | $ 72,483 | $ 69,098 | $ 66,489 | $ 63,676 | $ 63,183 | $ 60,041 | $ 352,586 | $ 296,500 | $ 253,388
Research and development | 18,064 | 16,886 | 14,064 | 13,050 | 10,427 | 8,903 | 8,714 | 8,361 | 7,520 | 7,462 | 6,835 | 7,181 | 62,063 | 36,405 | 28,999
Sales and marketing | 49,525 | 46,276 | 41,680 | 40,495 | 40,422 | 36,382 | 28,680 | 28,460 | 27,351 | 25,770 | 24,328 | 21,444 | 177,976 | 133,945 | 98,893
General and administrative | 20,365 | 18,038 | 20,326 | 14,833 | 12,566 | 13,489 | 13,105 | 12,691 | 13,037 | 10,622 | 9,105 | 9,111 | 73,563 | 51,851 | 41,875
Impairment of goodwill, intangible assets and equipment |  |  |  |  | 0 | 9,469 | 0 | 0 |  |  |  |  | 0 | 9,469 | 0
Loss from operations | (28,780) | (24,238) | (21,987) | (15,983) | (13,730) | (18,247) | (4,462) | (5,457) | (3,685) | (1,703) | (379) | (901) | (90,988) | (41,896) | (6,669)
Pre-Reclassification |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue | 93,767 | 89,912 | 85,682 | 83,225 | 79,344 | 75,575 | 72,483 | 69,098 | 66,489 | 63,676 | 63,183 | 60,041 | 352,586 | 296,500 | 253,388
Research and development | 17,815 | 16,876 | 13,933 | 13,110 | 10,016 | 8,527 | 8,311 | 7,943 | 7,142 | 7,094 | 6,505 | 6,710 | 61,734 | 34,797 | 27,452
Sales and marketing | 64,610 | 60,717 | 55,930 | 53,305 | 52,940 | 48,830 | 41,163 | 41,110 | 38,228 | 35,667 | 33,691 | 31,691 | 234,562 | 184,044 | 139,277
General and administrative | 16,666 | 14,196 | 16,543 | 11,433 | 10,340 | 10,003 | 9,616 | 8,956 | 9,814 | 7,852 | 6,747 | 6,801 | 58,838 | 38,915 | 31,214
Impairment of goodwill, intangible assets and equipment |  |  |  |  | 0 | 9,469 | 0 | 0 |  |  |  |  |  | 9,469 |
Loss from operations | (28,780) | (24,238) | (21,987) | (15,983) | (13,730) | (18,247) | (4,462) | (5,457) | (3,685) | (1,703) | (379) | (901) | (90,988) | (41,896) | (6,669)
Reclassifications |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
Research and development | 249 | 10 | 131 | (60) | 411 | 376 | 403 | 418 | 378 | 368 | 330 | 471 | 330 | 1,608 | 1,547
Sales and marketing | (15,085) | (14,441) | (14,250) | (12,810) | (12,518) | (12,448) | (12,483) | (12,650) | (10,877) | (9,897) | (9,363) | (10,247) | (56,586) | (50,099) | (40,384)
General and administrative | 3,699 | 3,842 | 3,783 | 3,400 | 2,226 | 3,486 | 3,489 | 3,735 | 3,223 | 2,770 | 2,358 | 2,310 | 14,724 | 12,936 | 10,661
Loss from operations | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
Service |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  |  |  |  |  | 334,438 | 280,430 | 235,816
Cost of revenue | 28,809 | 27,632 | 26,202 | 24,549 | 23,833 | 20,904 | 21,348 | 20,159 | 18,079 | 17,285 | 17,512 | 17,701 | 107,192 | 86,244 | 70,576
Service | Pre-Reclassification |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenue | 17,672 | 17,043 | 15,866 | 15,079 | 13,952 | 12,318 | 12,757 | 11,662 | 10,803 | 10,526 | 10,837 | 10,235 | 65,660 | 50,689 | 42,400
Service | Reclassifications |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenue | 11,137 | 10,589 | 10,336 | 9,470 | 9,881 | 8,586 | 8,591 | 8,497 | 7,276 | 6,759 | 6,675 | 7,466 | 41,532 | 35,555 | 28,176
Product |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  |  |  |  |  | 18,148 | 16,070 | 17,572
Cost of revenue | 5,784 | 5,318 | 5,397 | 6,281 | 5,826 | 4,675 | 5,098 | 4,884 | 4,187 | 4,240 | 5,782 | 5,505 | 22,780 | 20,482 | 19,714
Product | Pre-Reclassification |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenue | 5,784 | 5,318 | 5,397 | 6,281 | 5,826 | 4,675 | 5,098 | 4,884 | 4,187 | 4,240 | 5,782 | 5,505 | 22,780 | 20,482 | 19,714
Product | Reclassifications |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenue | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0

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