Annual report pursuant to Section 13 and 15(d)

BUSINESS ACQUISITION - Intangible Assets, Net - Narrative (Details)

v3.21.1
BUSINESS ACQUISITION - Intangible Assets, Net - Narrative (Details) - SBS - USD ($)
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Business Acquisition      
Intangible assets amortization expense   $ 0 $ 0
Weighted-average remaining amortization period 2 years 8 months 12 days