SEGMENTS (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) Industry Segment	Jun. 30, 2017 USD ($)
SEGMENTS [Abstract]
Number of industry in which entity operates | Industry			1
Number of reportable operating segments | Segment			3
Summary of key financial data [Abstract]
Net sales	$ 140,710	$ 131,617	$ 258,961	$ 245,285
Income from operations	10,667	7,266	11,104	9,621
North America [Member]
Summary of key financial data [Abstract]
Net sales	71,240	64,905	130,696	125,335
Asia [Member]
Summary of key financial data [Abstract]
Net sales	45,914	46,071	84,535	81,883
Europe [Member]
Summary of key financial data [Abstract]
Net sales	23,556	20,641	43,730	38,067
Reportable Operating Segments [Member] | North America [Member]
Summary of key financial data [Abstract]
Net sales	74,602	67,970	137,173	131,125
Income from operations	2,963	1,210	2,661	2,202
Reportable Operating Segments [Member] | Asia [Member]
Summary of key financial data [Abstract]
Net sales	70,005	70,419	126,144	126,830
Income from operations	5,319	5,314	5,234	6,350
Reportable Operating Segments [Member] | Europe [Member]
Summary of key financial data [Abstract]
Net sales	27,630	23,416	51,942	43,801
Income from operations	2,385	742	3,209	1,069
Intersegment Elimination [Member]
Summary of key financial data [Abstract]
Net sales	$ (31,527)	$ (30,188)	$ (56,298)	$ (56,471)