SEGMENTS (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) Industry Segment	Sep. 30, 2017 USD ($)
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	$ 146,489	$ 126,386	$ 405,451	$ 371,671
Income from operations	10,499	6,794	21,603	16,415
North America [Member]
Summary of key financial data [Abstract]
Net sales	70,654	59,537	201,351	184,873
Asia [Member]
Summary of key financial data [Abstract]
Net sales	53,528	45,919	138,062	127,801
Europe [Member]
Summary of key financial data [Abstract]
Net sales	22,307	20,930	66,038	58,997
Reportable Operating Segments [Member] | North America [Member]
Summary of key financial data [Abstract]
Net sales	73,932	62,348	211,105	193,473
Income from operations	3,360	366	6,021	2,566
Reportable Operating Segments [Member] | Asia [Member]
Summary of key financial data [Abstract]
Net sales	78,008	66,534	204,152	193,364
Income from operations	5,753	5,408	10,987	11,759
Reportable Operating Segments [Member] | Europe [Member]
Summary of key financial data [Abstract]
Net sales	25,398	23,633	77,341	67,434
Income from operations	1,386	1,020	4,595	2,090
Intersegment Elimination [Member]
Summary of key financial data [Abstract]
Net sales	$ (30,849)	$ (26,129)	$ (87,147)	$ (82,600)