RESTRUCTURING CHARGES - Schedule of Restructuring Liability (Details) $ in Thousands	6 Months Ended
	Sep. 30, 2017 USD ($)
Restructuring Reserve [Roll Forward]
Balance at March 31, 2017	$ 1,955
Restructuring charges to operations	937
Cash payments	(1,639)
Other adjustments	(423)
Balance at September 30, 2017	830
Employee-Related
Restructuring Reserve [Roll Forward]
Balance at March 31, 2017	1,550
Restructuring charges to operations	729
Cash payments	(1,519)
Other adjustments	(408)
Balance at September 30, 2017	352
Facilities Related
Restructuring Reserve [Roll Forward]
Balance at March 31, 2017	405
Restructuring charges to operations	208
Cash payments	(120)
Other adjustments	(15)
Balance at September 30, 2017	$ 478