STOCKHOLDERS' EQUITY (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Treasury Stock [Abstract]
Retirement of treasury stock			$ 0
Share Repurchase Plan [Abstract]
Authorized number of shares under stock repurchase program (in shares)	500,000
Common stock repurchased during the period (in shares)	185,026	409,839
Average cost of share repurchased (in dollars per share)	$ 76.34	$ 77.18
Common stock repurchased during the period	$ 14,100	$ 31,600
Shares repurchased to satisfy tax withholding obligation (in shares)	40,092	57,725
Value of shares repurchased to satisfy tax withholding obligation	$ 3,900	$ 4,400
Treasury Stock [Member]
Treasury Stock [Abstract]
Retirement of treasury stock (in shares)			6,200,000
Retirement of treasury stock			$ 158,948