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STOCK-BASED COMPENSATION - Repurchases and Sales of Company Stock (Details)

v3.21.2
STOCK-BASED COMPENSATION - Repurchases and Sales of Company Stock (Details) - OLD PlayStudios, Inc. - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expensed $ 25 $ 2,881 $ 9,232
Capitalized 0 119 687
Total $ 25 $ 3,000 $ 9,919
Stock repurchase through exercise of right of first refusal      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares 25 9,570 2,130
Expensed $ 25 $ 2,881 $ 707
Capitalized 0 119 148
Total $ 25 $ 3,000 $ 855
Secondary transaction between employees and MGM      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares     10,050
Expensed     $ 6,485
Capitalized     349
Total     $ 6,834
Secondary transaction between employees and existing investors      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares     6,128
Expensed     $ 2,040
Capitalized     190
Total     $ 2,230