SHARE REPURCHASE PROGRAM (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
SHARE REPURCHASE
Number of shares authorized to be repurchased	14,218,000
Repurchased common stock		$ 362,392	$ 154,792
Common Stock | Share Repurchase Program
SHARE REPURCHASE
Repurchased common stock (in shares)	0	3,716,000	1,513,000
Repurchased common stock	$ 0	$ 362,429	$ 154,808
Commissions	$ 0	$ 37	$ 16
Shares repurchased under the share repurchase program	10,400,000
Number of shares of common stock remaining available for repurchase under the entity's share repurchase authorization	3,818,000