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REVENUE RECOGNITION - Summary of Estimated Revenue Expected to be Recognized in Future Periods (Details)
$ in Thousands
Jun. 30, 2021
USD ($)
Revenue from Contract with Customer [Abstract]  
Total estimated revenue expected to be recognized in future periods $ 220,729
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01  
Revenue from Contract with Customer [Abstract]  
Total estimated revenue expected to be recognized in future periods $ 29,069
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total estimated revenue expected to be recognized in future periods, expected timing 6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01  
Revenue from Contract with Customer [Abstract]  
Total estimated revenue expected to be recognized in future periods $ 51,375
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total estimated revenue expected to be recognized in future periods, expected timing 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01  
Revenue from Contract with Customer [Abstract]  
Total estimated revenue expected to be recognized in future periods $ 45,388
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total estimated revenue expected to be recognized in future periods, expected timing 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01  
Revenue from Contract with Customer [Abstract]  
Total estimated revenue expected to be recognized in future periods $ 40,157
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total estimated revenue expected to be recognized in future periods, expected timing 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01  
Revenue from Contract with Customer [Abstract]  
Total estimated revenue expected to be recognized in future periods $ 33,174
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total estimated revenue expected to be recognized in future periods, expected timing 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue from Contract with Customer [Abstract]  
Total estimated revenue expected to be recognized in future periods $ 21,566
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total estimated revenue expected to be recognized in future periods, expected timing