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STOCK-BASED COMPENSATION - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2020
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Stock-based compensation expense | $ 69,784 | $ 59,844 | $ 43,290
EIP | Stock Options |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Stock-based compensation expense | 1,793 | 2,625 | 2,741
Annual Incentive Plan | Restricted Stock | Class A Common Stock |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Stock-based compensation expense | 67,991 | 57,219 | 40,549
Cost of revenue |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Stock-based compensation expense | 36,836 | 27,682 | 16,272
General and administrative expenses |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Stock-based compensation expense | $ 32,948 | $ 32,162 | $ 27,018

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