CASH, CASH EQUIVALENTS, RESTRICTED CASH AND MARKETABLE SECURITIES - Summary of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Cash and cash equivalents	$ 548,105	$ 467,176	$ 477,755	$ 338,489
Restricted cash	0	0	748	1,748
Total cash, cash equivalents and restricted cash	$ 548,105	$ 467,176	$ 478,503	$ 340,237