EARNINGS (LOSS) PER SHARE ("EPS") (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Computation of Basic earnings (loss) per share:
Net income (loss)	$ 60,276	$ (38,567)
Less: net income allocated to participating securities	(588)	0
Net income (loss) for basic earnings (loss) per share calculation	$ 59,688	$ (38,567)
Total weighted average shares outstanding—basic (in shares)	105,494	84,588
Less: weighted average participating shares outstanding (in shares)	(1,029)	0
Weighted average common shares outstanding—basic (in shares)	104,465	84,588
Basic earnings (loss) per share (in dollars per share)	$ 0.57	$ (0.46)
Earnings Per Share, Diluted [Abstract]
Net income (loss)	$ 60,276	$ (38,567)
Less: net income allocated to participating securities	(522)	0
Add: interest expense, net of tax, on Convertible Notes	5,750	0
Net income (loss) for diluted earnings (loss) per share calculation	$ 65,504	$ (38,567)
Total weighted average shares outstanding—basic (in shares)	105,494	84,588
Add: dilutive effect of common stock equivalents (in shares)	13,288	0
Weighted average common shares outstanding—diluted (in shares)	118,782	84,588
Less: weighted average participating shares outstanding (in shares)	(1,029)	0
Weighted average common shares outstanding- diluted (in shares)	117,753	84,588
Diluted earnings (loss) per share (in dollars per share)	$ 0.56	$ (0.46)