REVENUE (Revenue by Product Type) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Total revenues	$ 335,251	$ 279,211	$ 950,792	$ 798,673
ICs
Disaggregation of Revenue [Line Items]
Total revenues	44,452	46,397	158,121	103,918
Boards
Disaggregation of Revenue [Line Items]
Total revenues	145,500	130,047	374,573	384,806
Switch systems
Disaggregation of Revenue [Line Items]
Total revenues	79,094	53,484	234,960	166,205
Cables, accessories and other
Disaggregation of Revenue [Line Items]
Total revenues	$ 66,205	$ 49,283	$ 183,138	$ 143,744