v3.21.2
STOCKHOLDERS' EQUITY - Related Party Transactions (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Sep. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Maximum          
Related Party Transactions          
Ownership percentage 50.00%   50.00%    
Wanda          
Related Party Transactions          
Receivable due from related party $ 0.0   $ 0.0   $ 0.7
Wanda          
Related Party Transactions          
Reimbursements $ 0.0 $ 0.1 $ 0.0 $ 0.2