LEASES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Operating Leases [Abstract]
Operating lease cost	$ 3,700	$ 3,600	$ 7,400	$ 7,300
Variable lease cost	500		500
Rental payments deferred	1,200		1,200
Recognition of negative lease expense			500
Operating cash flow information [Abstract]
Cash paid for amounts included in the measurement of operating lease liabilities	3,802	3,821	7,643	7,603
Non-cash activity [Abstract]
Lease liabilities arising from obtaining right-of-use assets	8,469	$ 657	8,518	$ 48,634
Lease re-measurements	$ 8,700		$ 8,700
Weighted Average Remaining Lease Term and Discount Rate [Abstract]
Weighted-average remaining lease term	6 years 4 months 20 days	5 years 7 months 17 days	6 years 4 months 20 days	5 years 7 months 17 days
Weighted-average discount rate	11.94%	14.43%	11.94%	14.43%
Maturities of Lease Liabilities [Abstract]
2020 (excluding the six months ended June 30, 2020)	$ 7,691		$ 7,691
2021	14,045		14,045
2022	13,553		13,553
2023	11,926		11,926
2024	10,689		10,689
2025	9,116		9,116
Thereafter	17,196		17,196
Total lease payments	84,216		84,216
Less: imputed interest	(24,846)		(24,846)
Present value of lease liabilities	$ 59,370		$ 59,370
Minimum [Member]
Operating Leases [Abstract]
Remaining lease term	1 year		1 year
Maximum [Member]
Operating Leases [Abstract]
Remaining lease term	11 years		11 years