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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (FV - Level 3) (Details) - Contingent Consideration $ in Thousands | 9 Months Ended
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Sep. 30, 2018 USD ($)
Fair Value of liabilities level 3 hierarchy |
Balance beginning of period | $ 6,970
Payments | (3,528)
Change in fair value included in operating expenses | 1,030
Balance at end of period | $ 4,472

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