REVENUE, Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Abstract]
Net sales	$ 548,184	$ 491,611
Direct to Customer [Member]
Disaggregation of Revenue [Abstract]
Net sales	398,659
Through Distribution [Member]
Disaggregation of Revenue [Abstract]
Net sales	149,525
Connectivity Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	186,724	170,337
Magnetic Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	185,407	161,011
Power Solutions and Protection [Member]
Disaggregation of Revenue [Abstract]
Net sales	176,053	160,263
North America [Member]
Disaggregation of Revenue [Abstract]
Net sales	271,691	245,834
North America [Member] | Direct to Customer [Member]
Disaggregation of Revenue [Abstract]
Net sales	175,290
North America [Member] | Through Distribution [Member]
Disaggregation of Revenue [Abstract]
Net sales	96,401
North America [Member] | Connectivity Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	135,454
North America [Member] | Magnetic Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	37,805
North America [Member] | Power Solutions and Protection [Member]
Disaggregation of Revenue [Abstract]
Net sales	98,432
Asia [Member]
Disaggregation of Revenue [Abstract]
Net sales	187,203	167,680
Asia [Member] | Direct to Customer [Member]
Disaggregation of Revenue [Abstract]
Net sales	161,114
Asia [Member] | Through Distribution [Member]
Disaggregation of Revenue [Abstract]
Net sales	26,089
Asia [Member] | Connectivity Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	17,140
Asia [Member] | Magnetic Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	137,998
Asia [Member] | Power Solutions and Protection [Member]
Disaggregation of Revenue [Abstract]
Net sales	32,065
Europe [Member]
Disaggregation of Revenue [Abstract]
Net sales	89,290	$ 78,097
Europe [Member] | Direct to Customer [Member]
Disaggregation of Revenue [Abstract]
Net sales	62,255
Europe [Member] | Through Distribution [Member]
Disaggregation of Revenue [Abstract]
Net sales	27,035
Europe [Member] | Connectivity Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	34,130
Europe [Member] | Magnetic Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	9,604
Europe [Member] | Power Solutions and Protection [Member]
Disaggregation of Revenue [Abstract]
Net sales	$ 45,556