LEASES - Narrative (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2020 USD ($) lease	Apr. 01, 2019 USD ($)	Mar. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Operating right-of-use assets	$ 135,240	$ 136,900	$ 0
Operating lease liabilities	$ 154,218	$ 152,300	$ 0
Number of operating leases | lease	1
Lease not yet commenced, amount	$ 23,000
Operating lease, lease not yet commenced, term of contract	16 years
Minimum
Lessee, Lease, Description [Line Items]
Operating lease, term of contract	17 years
Maximum
Lessee, Lease, Description [Line Items]
Operating lease, term of contract	1 year