STOCKHOLDERS’ EQUITY - Schedule of Shares Reserved for Future Issuances (Details) - shares shares in Thousands	Mar. 31, 2022	Mar. 31, 2021
Blockcap Plans
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	13,989	14,000
2018 Plan
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	132,013
2021 Plan
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	45,000
Stock options | Blockcap Plans
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	7,332
Stock options | 2018 Plan
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	24,610
Stock options | 2021 Plan
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	0
Unvested restricted stock and restricted stock units outstanding | Blockcap Plans
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	4,830
Unvested restricted stock and restricted stock units outstanding | 2018 Plan
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	92,070
Unvested restricted stock and restricted stock units outstanding | 2021 Plan
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	0
Vested restricted stock and restricted stock units outstanding | Blockcap Plans
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	1,827
Vested restricted stock and restricted stock units outstanding | 2018 Plan
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	1,363
Vested restricted stock and restricted stock units outstanding | 2021 Plan
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	0
Available for future stock option and restricted stock units and grants | Blockcap Plans
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	0
Available for future stock option and restricted stock units and grants | 2018 Plan
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	13,970
Available for future stock option and restricted stock units and grants | 2021 Plan
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	45,000