BUSINESS REORGANIZATION (Details)	12 Months Ended
	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2016 USD ($) location
Restructuring Cost and Reserve [Line Items]
Reorganization expenses incurred	$ 83,000	$ (4,958,000)	$ 14,742,000
2018 Plan
Restructuring Cost and Reserve [Line Items]
Reorganization expenses incurred	83,000	972,000	$ 14,742,000
Reorganizing amounts paid	9,502,000
2018 Plan | Accrued Liabilities
Restructuring Cost and Reserve [Line Items]
Remaining accrual	3,862,000
2018 Plan | Other long term liabilities
Restructuring Cost and Reserve [Line Items]
Remaining accrual	2,493,000
2016 Plan
Restructuring Cost and Reserve [Line Items]
Reorganization expenses incurred				$ 71,285,000
Reorganizing amounts paid	$ 65,355,000
Remaining accrual		0
Number of locations reorganized | location				1
Number of locations closed | location				2
Restructuring cost benefit		$ 5,930,000