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EMPLOYEE STOCK COMPENSATION - Nonvested Stock Option Activity (Details) - $ / shares
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Number of Shares      
Outstanding at beginning of year (in shares) 63,848 105,432 518,936
Granted (in shares) 0 0 0
Vested (in shares) (17,600) (41,584) (174,833)
Forfeited (in shares) (44,000) 0 (238,671)
Outstanding at end of year (in shares) 2,248 63,848 105,432
Weighted-Average Exercise Price per Share      
Outstanding at beginning of year (in dollars per share) $ 13.30 $ 13.31 $ 15.04
Granted (in dollars per share) 0 0 0
Vested (in dollars per share) 13.26 13.32 14.10
Forfeited (in dollars per share) 13.29 0 16.50
Outstanding at end of year (in dollars per share) $ 13.75 $ 13.30 $ 13.31