INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
INCOME TAXES [Abstract]
Gross liability related to uncertain tax positions	$ 72		$ 72
Impact of recognizing the unrecognized tax benefit	105		105
Accrued interest on income taxes	50	$ 46	50	$ 46
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Excess tax benefits and deficiencies	11,808	$ 10,982	18,623	$ 17,234
New Accounting Pronouncement, Early Adoption, Effect [Member] | Restatement Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Excess tax benefits and deficiencies	$ (400)		$ (400)