FAIR VALUE OF FINANCIAL INSTRUMENTS - Fair Value Measurements of Contingent Consideration (Details) - Level 3 - Fair Value, Recurring - Discounted cash flow, Monte Carlo |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2022 |
Dec. 31, 2021 |
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | ||
| Expected years | 2 years 1 month 6 days | 2 years 4 months 24 days |
| Present value discount rate | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | ||
| Contingent consideration, measurement input | 19.30% | 18.40% |
| Volatility factor | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | ||
| Contingent consideration, measurement input | 46.50% | 50.30% |