RESTRUCTURING CHARGES - Schedule of Restructuring Liability (Details) $ in Thousands	9 Months Ended
	Dec. 31, 2018 USD ($)
Restructuring Reserve [Roll Forward]
Balance at March 31, 2018	$ 3,696
Restructuring charges to operations	17,764
Cash payments	(19,596)
Other adjustments	(573)
Balance at December 31, 2018	1,291
Q3 FY 2018 Plan | Employee-Related
Restructuring Reserve [Roll Forward]
Balance at March 31, 2018	3,696
Restructuring charges to operations	1,017
Cash payments	(4,241)
Other adjustments	(462)
Balance at December 31, 2018	10
Q3 FY 2018 Plan | Facility-Related
Restructuring Reserve [Roll Forward]
Balance at March 31, 2018	0
Restructuring charges to operations	643
Cash payments	(458)
Other adjustments	(185)
Balance at December 31, 2018	0
VSP | Employee-Related
Restructuring Reserve [Roll Forward]
Balance at March 31, 2018	0
Restructuring charges to operations	16,104
Cash payments	(14,897)
Other adjustments	74
Balance at December 31, 2018	$ 1,281