LEASES - Operating Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Dec. 31, 2019	Dec. 31, 2019
Leases [Abstract]
Lease cost under long-term operating leases	$ 3,459	$ 9,980
Lease cost under short-term operating leases	1,681	3,430
Variable lease cost under short-term and long-term operating leases	974	3,249
Total operating lease cost	$ 6,114	$ 16,659