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STOCK-BASED COMPENSATION PLANS, Long-Term Incentive Program (Details) - shares
12 Months Ended
May 17, 2017
May 14, 2014
May 25, 2011
Dec. 31, 2019
Share-based Arrangements with Employees and Nonemployees [Abstract]        
Shares of common stock authorized for stock-based compensation plan (in shares)       4,000,000
Additional shares of common stock authorized for stock-based compensation plan (in shares) 1,000,000 1,000,000 900,000  
Number of shares available for grant (in shares)       1,200,000
Remaining Stock Options [Member]        
Share-based Arrangements with Employees and Nonemployees [Abstract]        
Term of options       10 years
Award vesting period       5 years
Director's Stock Balance Plan [Member] | Nonqualified Stock Option [Member]        
Share-based Arrangements with Employees and Nonemployees [Abstract]        
Term of options       1 year
Term of options in event of death       2 years