SHARE REPURCHASE PROGRAM (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2014	May 31, 2015	Jan. 31, 2013
SHARE REPURCHASE
Repurchased common stock		$ 26,552
Common Stock | Share Repurchase Program
SHARE REPURCHASE
Number of shares authorized to be repurchased					7,500,000
Additional number of shares authorized to be repurchased				6,717,683
Repurchased common stock (in shares)	0	953,647	4,217,683
Repurchased common stock		$ 26,552	$ 73,325
Commissions		$ 10	$ 42
Shares repurchased under the share repurchase program	5,171,330
Number of shares of common stock remaining available for repurchase under the entity's share repurchase authorization	9,046,353