RESTRUCTURING CHARGES - Schedule of Restructuring Liability (Details) $ in Thousands	6 Months Ended
	Sep. 30, 2019 USD ($)
Restructuring Reserve [Roll Forward]
Balance at March 31, 2019	$ 0
Restructuring charges to operations	273
Cash payments	(273)
Balance at September 30, 2019	0
VSP | Employee Related Restructuring Plan 2019
Restructuring Reserve [Roll Forward]
Balance at March 31, 2019	0
Restructuring charges to operations	123
Cash payments	(123)
Balance at September 30, 2019	0
Q2FY20 Plan | Employee Related Restructuring Plan 2019
Restructuring Reserve [Roll Forward]
Balance at March 31, 2019	0
Restructuring charges to operations	150
Cash payments	(150)
Balance at September 30, 2019	$ 0