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EQUITY-BASED COMPENSATION - Stock options (Details)
9 Months Ended
Sep. 30, 2020
$ / shares
shares
Stock options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of exercisable shares (in shares) | shares 235,000
Weighted average exercise price, exercisable (in dollars per share) | $ / shares $ 9.75
Weighted average remaining contractual terms, exercisable 4 months 24 days
Minimum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock options term 5 years
Maximum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock options term 10 years