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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)

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