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EMPLOYEE STOCK COMPENSATION - Summary of SARs Activity (Details) - Stock appreciation rights - $ / shares
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Number of Shares      
Outstanding at beginning of year (in shares) 1,559,012 1,559,047 1,561,681
Granted (in shares) 0 0 0
Exercised (in shares) 0 0 0
Forfeited (in shares) 0 (35) (2,634)
Outstanding at end of year (in shares) 1,559,012 1,559,012 1,559,047
Exercisable at end of year (in shares) 1,559,012 1,559,012 1,550,978
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) 0.00 0.00 0.00
Exercised (in dollars per share) 0.00 0.00 0.00
Forfeited (in dollars per share) 0.00 10.09 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 $ 11.61
Number of Shares      
Outstanding at beginning of year (in shares) 0 8,069 25,963
Granted (in shares) 0 0 0
Vested (in shares) 0 (8,034) (15,260)
Forfeited (in shares) 0 (35) (2,634)
Outstanding at end of year (in shares) 0 0 8,069
Weighted-Average Price per Share      
Outstanding at beginning of year (in dollars per share) $ 0.00 $ 10.09 $ 10.09
Granted (in dollars per share) 0.00 0.00 0.00
Vested (in dollars per share) 0.00 10.09 10.09
Forfeited (in dollars per share) 0.00 10.09 10.09
Outstanding at end of year (in dollars per share) $ 0.00 $ 0.00 $ 10.09