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STOCK-BASED COMPENSATION: - Effect of stock-based compensation expense on income, by financial statement line item (Details) - USD ($) $ in Thousands | 9 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Share-based compensation |  |
Total non-cash stock-based compensation | $ 61,475 | $ 64,583
Cost of revenue |  |
Share-based compensation |  |
Total non-cash stock-based compensation | 2,906 | 2,676
Research and development |  |
Share-based compensation |  |
Total non-cash stock-based compensation | 21,796 | 20,975
Sales and marketing |  |
Share-based compensation |  |
Total non-cash stock-based compensation | 20,871 | 25,568
General and administrative |  |
Share-based compensation |  |
Total non-cash stock-based compensation | $ 15,902 | $ 15,364

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