RESTRUCTURING CHARGES - Schedule of Accrued Restructuring Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2020
Accrued restructuring and severance costs rollforward
Balance at beginning of period	$ 1,332	$ 3,763
Net accrual additions	5,520
Cash paid	(1,569)	(2,431)
Balance at end of period	5,283	1,332
Employee compensation costs
Accrued restructuring and severance costs rollforward
Balance at beginning of period	1,332	3,763
Net accrual additions	5,435
Cash paid	(1,484)	(2,431)
Balance at end of period	5,283	1,332
Other exit costs
Accrued restructuring and severance costs rollforward
Balance at beginning of period	0	0
Net accrual additions	85
Cash paid	(85)	0
Balance at end of period	$ 0	$ 0