GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Change in goodwill	$ 0	$ 0	$ 0		$ 15,931,000
Impairment of goodwill	0	0	(18,649,000)	$ 0	$ 0
Increase in intangible assets	0	0	0
Loss on disposition of intangible assets			(1,148,000)
Impairment of finite-lived intangible asset	$ 0	$ 0	$ 0	0
HALO
Finite-Lived Intangible Assets [Line Items]
Increase in intangible assets				$ 28,061,000