GOODWILL AND INTANGIBLE ASSETS - Long-lived Intangible Assets, Net of Amortization (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Total intangible assets, net of accumulated amortization	$ 51,704	$ 63,110
Weighted Average Amortization Period	8 years 3 months 18 days	8 years 3 months 18 days
Trade names
Finite-Lived Intangible Assets [Line Items]
Total intangible assets, net of accumulated amortization	$ 21,459	$ 25,871
Weighted Average Amortization Period	9 years 8 months 12 days	9 years 8 months 12 days
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Total intangible assets, net of accumulated amortization	$ 17,742	$ 21,514
Weighted Average Amortization Period	7 years 8 months 12 days	7 years 8 months 12 days
Patents and technology
Finite-Lived Intangible Assets [Line Items]
Total intangible assets, net of accumulated amortization	$ 12,353	$ 15,306
Weighted Average Amortization Period	8 years 4 months 24 days	8 years 3 months 18 days
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Total intangible assets, net of accumulated amortization	$ 150	$ 419
Weighted Average Amortization Period	4 years 10 months 24 days	4 years 10 months 24 days