INTANGIBLE ASSETS - Schedule of intangible assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 218,702	$ 219,251
Finite-Lived Intangible Assets, Accumulated Amortization	(45,058)	(35,240)
Finite-lived intangible assets, net	173,644	184,011
Technology Equipment [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	83,224	83,368
Finite-Lived Intangible Assets, Accumulated Amortization	(19,152)	(14,250)
Finite-lived intangible assets, net	64,072	69,118
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	108,684	108,995
Finite-Lived Intangible Assets, Accumulated Amortization	(21,885)	(18,197)
Finite-lived intangible assets, net	86,799	90,798
Trademarks and other [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	26,794	26,888
Finite-Lived Intangible Assets, Accumulated Amortization	(4,021)	(2,793)
Finite-lived intangible assets, net	$ 22,773	$ 24,095