General form of registration statement for all companies including face-amount certificate companies

STOCK-BASED COMPENSATION - Weighted-average Assumption to Estimate Fair Value of Stock Options Granted (Details)

v3.21.2
STOCK-BASED COMPENSATION - Weighted-average Assumption to Estimate Fair Value of Stock Options Granted (Details) - OLD PlayStudios, Inc. - Stock options - $ / shares
3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Expected term (in years) 5 years 10 months 10 days 5 years 10 months 6 days      
Expected volatility 51.24% 58.45%      
Risk-free interest rate range, minimum 0.54% 0.41%      
Risk-free interest rate range, maximum 0.60% 0.47%      
Dividend yield 0.00% 0.00%      
Grant-date fair value $ 0.52 $ 0.29      
Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Expected term (in years)     5 years 11 months 16 days 5 years 11 months 5 days 5 years 11 months 27 days
Expected volatility     59.56% 70.00% 63.12%
Risk-free interest rate range, minimum     0.24% 1.54% 2.77%
Risk-free interest rate range, maximum     0.51% 2.59% 3.13%
Dividend yield     0.00% 0.00% 0.00%
Grant-date fair value     $ 0.60 $ 0.27 $ 0.19