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ACQUISITION, Fair Values of Consideration Transferred and Identifiable Net assets Acquired (Details) - USD ($) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Oct. 01, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Fair Values of Consideration Transferred and Identifiable Net assets Acquired [Abstract] |  |  |  |
Goodwill |  | $ 19,817 | $ 20,177 | $ 17,951
BCMZ [Member] |  |  |  |
Fair Values of Consideration Transferred and Identifiable Net assets Acquired [Abstract] |  |  |  |
Identifiable assets acquired | $ 2,986 |  |  |
Liabilities assumed | (1,688) |  |  |
Net identifiable assets acquired | 1,298 | 1,298 | 0 |
Goodwill | 1,290 | 1,290 | 0 |
Net assets acquired | 2,588 | 2,588 | 0 |
Fair value of consideration transferred | $ 2,588 | $ 2,588 | $ 0 |

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