BASIS OF PRESENTATION (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Excess tax benefit (shortfall) amount	$ (400)		$ 800
Net income	89,685	$ 21,245	62,995	$ 10,981
Decrease in cash used in financing activities				1,400
Accounting Standards Update 2016-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income	$ (400)		$ 800
Basic and diluted earnings per share	$ (0.01)		$ 0.01
Excess tax benefit (shortfall) from stock based compensation awards			$ 800	1,400
Decrease in cash provided by operating activities				$ 1,400