NET LOSS PER SHARE - Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Numerator:
Net loss available to common stockholders	$ (34,265)	$ (15,355)
Denominator:
Common shares - basic and diluted (in shares)	96,429	93,064
Net loss per share
Basic and diluted (in dollars per share)	$ (0.36)	$ (0.16)