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RECEIVABLES-Concentration of credit risk (Details)

v3.21.2
RECEIVABLES-Concentration of credit risk (Details) - OLD PlayStudios, Inc. - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Concentration Risk [Line Items]      
Concentartion risk.   10.00% 10.00%
Estimated maximum amount of loss from notes receivable $ 8.0    
Estimated maximum amount of loss from notes receivable included in other long-term assets $ 3.0    
Percentage of secured notes receivable 62.50%    
Trade receivables | Apple, Inc | Customer concentration      
Concentration Risk [Line Items]      
Concentration risk 60.60% 48.90% 46.00%
Trade receivables | Google, Inc | Customer concentration      
Concentration Risk [Line Items]      
Concentration risk 32.40% 42.70% 43.00%
Notes receivables | Customer concentration      
Concentration Risk [Line Items]      
Concentartion risk. 95.80%