INTANGIBLE ASSETS - Schedule of intangible assets (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 218,228	$ 219,251
Finite-Lived Intangible Assets, Accumulated Amortization	(39,749)	(35,240)
Finite-lived intangible assets, net	178,479	184,011
Technology Equipment [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	82,994	83,368
Finite-Lived Intangible Assets, Accumulated Amortization	(16,550)	(14,250)
Finite-lived intangible assets, net	66,444	69,118
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	108,451	108,995
Finite-Lived Intangible Assets, Accumulated Amortization	(19,827)	(18,197)
Finite-lived intangible assets, net	88,624	90,798
Trademarks and other [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	26,783	26,888
Finite-Lived Intangible Assets, Accumulated Amortization	(3,372)	(2,793)
Finite-lived intangible assets, net	$ 23,411	$ 24,095