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COMMITMENTS AND CONTINGENCIES (Details 2) | 12 Months Ended
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Dec. 31, 2017 USD ($) claim | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Commitments and contingencies |  |  |
Payment made to third party | $ 10,000 | $ 100,000 | $ 100,000
Non Income Tax |  |  |
Commitments and contingencies |  |  |
Accrued liabilities | 400,000 | 300,000 |
Non Income Tax | Minimum |  |  |
Commitments and contingencies |  |  |
Estimate of possible loss | 0 |  |
Non Income Tax | Maximum |  |  |
Commitments and contingencies |  |  |
Estimate of possible loss | $ 4,000,000 |  |
Value-added tax assessments and other civil litigation |  |  |
Commitments and contingencies |  |  |
Minimum number of claims that the Company's insurance coverage may not be sufficient to cover | claim | 1 |  |
Accrued litigation expense | $ 1,500,000 |  |
Provision for losses | 0 |  |
Value-added tax assessments and other civil litigation | Minimum |  |  |
Commitments and contingencies |  |  |
Estimate of possible loss | 0 |  |
Value-added tax assessments and other civil litigation | Maximum |  |  |
Commitments and contingencies |  |  |
Estimate of possible loss | 1,900,000 |  |
Product liability and employee medical claims |  |  |
Commitments and contingencies |  |  |
Accrued liabilities | 1,500,000 | 2,400,000 |
Accrued liabilities classified as short-term | 600,000 | $ 700,000 |
Manufacturing Equipment and Leasehold Improvements |  |  |
Commitments and contingencies |  |  |
Other commitments in 2018 | $ 1,700,000 |  |

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