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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair Value (Details) $ in Thousands | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) | Dec. 31, 2019 USD ($)
Liabilities: |  |  |  |
Contingent consideration | $ 4,948 | $ 1,703 | $ 4,948 |
Business Combination, Contingent Consideration, Liability, Valuation Technique [Extensible List] |  |  | us-gaap:IncomeApproachValuationTechniqueMember |
Business Combination, Contingent Consideration, Liability, Measurement Input [Extensible List] |  |  | us-gaap:MeasurementInputDiscountRateMember |
Contingent consideration, measurement input |  |  | 0.0250 |
Change in the contingent consideration liability |  |  |  |
Beginning Balance |  | 1,703 |  |
Neuralify contingent consideration accrued | 4,900 |  |  |
Payment of contingent consideration |  | (1,730) |  |
Accretion of contingent consideration | 48 | 30 |  |
Unrealized gain (loss) related to currency translation |  | $ (3) |  |
Ending Balance | 4,948 |  |  |
Debt instrument, valuation technique, extensible list |  |  | us-gaap:ValuationTechniqueDiscountedCashFlowMember |
Debt instrument, measurement input, extensible list |  |  | us-gaap:MeasurementInputDiscountRateMember |
Debt instrument, measurement input |  |  | 0.0248 |
Outstanding borrowings |  |  | $ 79,900 | $ 86,900
Fair value of outstanding borrowing |  |  | 78,800 | 86,700
Recurring |  |  |  |
Assets: |  |  |  |
Cash equivalents |  |  | 17 | 17
Total |  |  | 17 | 17
Liabilities: |  |  |  |
Contingent consideration | 4,948 |  | 4,948 |
Total |  |  | 4,948 |
Change in the contingent consideration liability |  |  |  |
Ending Balance | 4,948 |  |  |
Recurring | Level1 |  |  |  |
Assets: |  |  |  |
Cash equivalents |  |  | 17 | 17
Total |  |  | 17 | $ 17
Recurring | Level3 |  |  |  |
Liabilities: |  |  |  |
Contingent consideration | 4,948 |  | 4,948 |
Total |  |  | $ 4,948 |
Change in the contingent consideration liability |  |  |  |
Ending Balance | $ 4,948 |  |  |

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