BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Cash, Accounts Receivables, and PP&E (Details)	12 Months Ended
	Mar. 31, 2021
Machinery and equipment | Minimum
Property, plant and equipment, net
Estimated useful lives	5 years
Machinery and equipment | Maximum
Property, plant and equipment, net
Estimated useful lives	15 years
Buildings
Property, plant and equipment, net
Estimated useful lives	30 years
Leasehold improvements | Minimum
Property, plant and equipment, net
Estimated useful lives	2 years
Leasehold improvements | Maximum
Property, plant and equipment, net
Estimated useful lives	5 years