INCOME TAXES - Schedule of Federal Statutory Income Tax Rate to Effective Tax Rate (Details)	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Statutory U.S. federal tax rate	21.00%	21.00%	31.60%
State taxes, net of federal tax effect	(47.80%)	3.40%	6.90%
Research and development tax credits	(245.90%)	7.10%	39.50%
Effect of foreign operations	(66.90%)	(0.10%)	14.00%
Meals and entertainment	43.70%	(1.00%)	(6.70%)
Domestic production activities deduction	0.00%	0.00%	13.80%
Change in valuation allowance	250.00%	2.20%	(0.20%)
Internal restructuring charges	196.50%	0.00%	0.00%
Stock compensation	172.10%	(2.60%)	(2.50%)
Divestiture	0.00%	(1.00%)	0.00%
GILTI/FDII	(174.30%)	2.90%	0.00%
BEAT	0.00%	(7.00%)	0.00%
2017 Tax Act (transition tax and re-measurement of deferreds)	0.00%	0.40%	454.10%
Foreign withholding	220.60%	(3.10%)	(21.00%)
Provision to return	(152.80%)	(1.00%)	0.80%
Other permanent differences	26.90%	(0.10%)	(2.60%)
Total effective income tax rate	243.10%	21.10%	527.70%