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RELATED PARTY TRANSACTIONS WITH IAC - Narrative (Details) - USD ($)
shares in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Related Party Transaction [Line Items]      
Distribution to IAC pursuant to the tax sharing agreement $ 0 $ 11,355,000  
IAC | Services Agreement      
Related Party Transaction [Line Items]      
Charges for services rendered pursuant to the services agreement 1,200,000 1,400,000  
IAC | Sublease Agreement      
Related Party Transaction [Line Items]      
Revenue from related parties 400,000 0  
Outstanding receivable due     $ 0
IAC | Tax Sharing Agreement      
Related Party Transaction [Line Items]      
Outstanding receivable due 3,000,000.0    
Outstanding payables due     $ 200,000
Distribution to IAC pursuant to the tax sharing agreement $ 0 $ 11,400,000  
IAC | Employee Matters Agreement      
Related Party Transaction [Line Items]      
Shares received from related party pursuant to employee matters agreement (shares) 0.2 0.3