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FAIR VALUE MEASUREMENT OF FINANCIAL INSTRUMENTS - Quantitative Information about Level 3 Unobservable Inputs (Details) - Level 3	Dec. 31, 2019 USD ($)
Monte Carlo simulation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 6,000,000
Monte Carlo simulation | Discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	0.028
Monte Carlo simulation | Revenue Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	0.244
Monte Carlo simulation | Risk free rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	0.019
Probability Analysis
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 13,873,000
Probability Analysis | Discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	0.030
Probability Analysis | Payment amounts | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	$ 3,000,000
Probability Analysis | Payment amounts | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	4,800,000
Probability Analysis | Payment amounts | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	$ 7,000,000
Probability Analysis | Probabilities | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	0.40
Probability Analysis | Probabilities | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	0.47
Probability Analysis | Probabilities | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	0.54

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- Definition

Business Combination, Contingent Consideration, Liability, Measurement Input, Payment Amount

+ References

No definition available.

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
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-Section 25
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- Definition

Value of input used to measure contingent consideration liability from business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
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