EMPLOYEE BENEFIT PLANS Schedule of Separation Agreements (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Voluntary Separation Program [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs	$ 1,122	$ 1,686	$ 8,550
Voluntary Separation Program [Member] | Direct cost
Restructuring Cost and Reserve [Line Items]
Severance Costs	105	1,663	7,664
Voluntary Separation Program [Member] | General and Administrative Expense [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs	1,017	23	886
Involuntary Separation Program [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs	21,214	15,176	13,950
Involuntary Separation Program [Member] | Direct cost
Restructuring Cost and Reserve [Line Items]
Severance Costs	11,538	5,938	5,162
Involuntary Separation Program [Member] | General and Administrative Expense [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs	$ 9,676	$ 9,238	$ 8,788