NET INCOME (LOSS) PER SHARE - Schedule of Calculations of EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Numerator:
Net income (loss)	$ 36,725	$ (3,603)	$ (10,090)	$ (92,535)
Denominator:
Denominator for basic net income (loss) per share - weighted average common shares outstanding (in shares)	74,367	77,774	75,780	78,916
Dilutive common equivalent shares:
Weighted average restricted stock units (in shares)	333	0	0	0
Denominator for diluted net income (loss) per share - weighted average shares outstanding (in shares)	74,700	77,774	75,780	78,916
Net (income) loss per share:
Basic net income (loss) per share (in dollars per share)	$ 0.49	$ (0.05)	$ (0.13)	$ (1.17)
Diluted net income (loss) per share (in dollars per share)	$ 0.49	$ (0.05)	$ (0.13)	$ (1.17)