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STOCK PLANS AND STOCK BASED COMPENSATION - NARRATIVE (Details)
12 Months Ended
Dec. 31, 2024
shares
2015 Plan  
STOCK PLANS AND STOCK BASED COMPENSATION  
Number of shares available for grant permitted by plan 3,000,000
Minimum | 2015 Plan  
STOCK PLANS AND STOCK BASED COMPENSATION  
Vesting period 3 years
Employee Stock Option  
STOCK PLANS AND STOCK BASED COMPENSATION  
Outstanding or available for exercise 76,211
Employee Stock Option | 2015 Plan  
STOCK PLANS AND STOCK BASED COMPENSATION  
Exercisable period 1 year
Employee Stock Option | 2015 Plan | Class B Common Stock  
STOCK PLANS AND STOCK BASED COMPENSATION  
Outstanding or available for exercise 0
Employee Stock Option | Minimum | 2015 Plan  
STOCK PLANS AND STOCK BASED COMPENSATION  
Exercisable period 3 years
Employee Stock Option | Maximum [Member] | 2015 Plan  
STOCK PLANS AND STOCK BASED COMPENSATION  
Exercisable period 6 years
Restricted Stock Awards | Minimum | 2015 Plan  
STOCK PLANS AND STOCK BASED COMPENSATION  
Vesting period 3 years
Restricted Stock Awards | Maximum [Member] | 2015 Plan  
STOCK PLANS AND STOCK BASED COMPENSATION  
Vesting period 6 years
Performance Shares | 2015 Plan  
STOCK PLANS AND STOCK BASED COMPENSATION  
Vesting period 3 years
Exercisable period 1 year