RESTRUCTURING EXPENSE (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Restructuring Cost And Reserve [Line Items]
Total restructuring charges	$ 43	$ 2,146
Payments for Restructuring	26	$ 1,800
Post-retirement medical benefits
Restructuring Cost And Reserve [Line Items]
Restructuring accrual	100
Engineered Systems
Restructuring Cost And Reserve [Line Items]
Total restructuring charges	$ 0