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RESTRUCTURING ACTIVITIES (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Activity and liability balances related to restructuring costs [Roll Forward] |  |
Liability, beginning balance | $ 588 | $ 110
New charges | 137 | 1,409
Cash payment and other settlements | (725) | (931)
Liability, ending balance | 0 | 588
Other restructuring costs | 200 | 700
Severance Costs [Member] |  |
Activity and liability balances related to restructuring costs [Roll Forward] |  |
Liability, beginning balance | 588 | 110
New charges | 86 | 1,407
Cash payment and other settlements | (674) | (929)
Liability, ending balance | 0 | 588
Other Restructuring Costs [Member] |  |
Activity and liability balances related to restructuring costs [Roll Forward] |  |
Liability, beginning balance | 0 | 0
New charges | 51 | 2
Cash payment and other settlements | (51) | (2)
Liability, ending balance | $ 0 | $ 0

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