FAIR VALUE MEASUREMENTS - FAIR VALUE INPUTS AND ASSUMPTIONS (Details) - Level 3 - Recurring - Future tranche right	Jan. 31, 2021	May 07, 2020
Risk-free interest rate for preferred stock
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Rights outstanding, measurement input	0.0186	0.0131
Implied credit spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Rights outstanding, measurement input	0.0678	0.1078
Expected volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Rights outstanding, measurement input	0.3000	0.3000
Verint common stock price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Rights outstanding, measurement input	73.83	45.44