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SHARE-BASED COMPENSATION - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Nov. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Document Period End Date Dec. 31, 2019      
Carry Unit Plan | Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration period 60 days      
Repurchase period following fourth anniversary 60 days      
Carry unit plan, written promissory note period 3 years      
Weighted average fair value (in dollars per unit) $ 3.25 $ 1.95 $ 2.50  
Share based compensation expense $ 54,614 $ 41,321 $ 57,430  
Carry Unit Plan | Restricted Stock Units | Tranche One        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage 50.00%      
Carry Unit Plan | Restricted Stock Units | Tranche Two        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage 25.00%      
Carry Unit Plan | Restricted Stock Units | Tranche Three        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage   25.00%    
2017 LTIP | Stock options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration period 10 years      
Share based compensation expense $ 44,464 $ 18,491 $ 0  
Awards authorized (in shares)       19,879,291
Vesting period 4 years      
2017 LTIP | Stock options | Tranche One        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage 50.00%      
2017 LTIP | Stock options | Tranche Two        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage 25.00%      
2017 LTIP | Stock options | Tranche Three        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage 25.00%      
2019 LTIP [Member] | Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share based compensation expense $ 6,459      
Vesting period 4 years      
Deferred Compensation Arrangement with Individual, Fair Value of Shares Issued $ 27,013      
2019 LTIP [Member] | Restricted Stock | Tranche One        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage 50.00%      
2019 LTIP [Member] | Restricted Stock | Tranche Two        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage 25.00%      
2019 LTIP [Member] | Restricted Stock | Tranche Three        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage 25.00%