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EMPLOYEE STOCK COMPENSATION - Summary of SARs Activity (Details) - Stock appreciation rights - $ / shares
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Number of Shares      
Outstanding at beginning of year (in shares) 1,559,012 1,559,012 1,559,047
Granted (in shares) 0 0 0
Exercised (in shares) 0 0 0
Forfeited (in shares) 0 0 (35)
Outstanding at end of year (in shares) 1,559,012 1,559,012 1,559,012
Exercisable at end of year (in shares) 1,559,012 1,559,012 1,559,012
Weighted-Average Exercise Price per Share      
Outstanding at beginning of year (in dollars per share) $ 11.60 $ 11.60 $ 11.60
Granted (in dollars per share) 0 0 0
Exercised (in dollars per share) 0 0 0
Forfeited (in dollars per share) 0 0 10.09
Outstanding at end of year (in dollars per share) 11.60 11.60 11.60
Exercisable at end of year (in dollars per share) $ 11.60 $ 11.60 $ 11.60
Number of Shares      
Outstanding at beginning of year (in shares) 0 0 8,069
Granted (in shares) 0 0 0
Vested (in shares) 0 0 (8,034)
Forfeited (in shares) 0 0 (35)
Outstanding at end of year (in shares) 0 0 0
Weighted-Average Price per Share      
Outstanding at beginning of year (in dollars per share) $ 0 $ 0 $ 10.09
Granted (in dollars per share) 0 0 0
Vested (in dollars per share) 0 0 10.09
Forfeited (in dollars per share) 0 0 10.09
Outstanding at end of year (in dollars per share) $ 0 $ 0 $ 0