TREASURY STOCK (Details) - USD ($) $ in Thousands	6 Months Ended		27 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	May 19, 2015
Equity, Class of Treasury Stock [Line Items]
Shares repurchased during the period, value	$ 200,000	$ 76,592
Share Repurchase Program, May 2015
Equity, Class of Treasury Stock [Line Items]
Stock authorized to repurchase under stock repurchase program (in shares)				20,000,000
Shares repurchased during the period (in shares)	5,802,788		19,029,350
Shares repurchased during the period, value	$ 200,000		$ 580,000
Stock remaining to be purchased (in shares)	970,650		970,650
Restricted stock units
Equity, Class of Treasury Stock [Line Items]
Shares paid for tax withholding	317,857
Cost related to tax withholding	$ 11,000