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NET INCOME (LOSS) PER SHARE - Additional Information (Details) - shares
Jun. 05, 2019
Sep. 30, 2019
Dec. 31, 2018
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]      
Common stock, authorized (in shares)   900,000,000 900,000,000
Class A Common      
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]      
Additional shares authorized (in shares) 6,000,000    
Common stock, authorized (in shares) 13,335,430 750,000,000 750,000,000