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STOCK COMPENSATION - Summary of Stock Option (Details)
$ / shares in Units, $ in Thousands
 6 Months Ended
Jun. 30, 2020
USD ($)
$ / shares
shares
Options  
Beginning balance (in shares) | shares 1,508,325
Grants (in shares) | shares 37,500
Cancellations (in shares) | shares (3,750)
Expirations (in shares) | shares (229,175)
Ending balance (in shares) | shares 1,312,900
Options exercisable, end of period (in shares) | shares 999,919
Weighted- average exercise price  
Beginning balance (usd per share) | $ / shares $ 13.43
Grants (usd per share) | $ / shares 6.36
Cancellations (usd per share) | $ / shares 12.86
Expirations (usd per share) | $ / shares 13.14
Ending balance (usd per share) | $ / shares 13.28
Weighted-average exercise price, Options exercisable, end of period (usd per share) | $ / shares $ 14.28
Weighted- average remaining contractual life (years)  
Options outstanding, end of period 5 years 3 months 18 days
Options exercisable, end of period 4 years 2 months 12 days
Aggregate intrinsic value (in thousands)  
Options outstanding, aggregate intrinsic Value | $ $ 14
Options exercisable, aggregate intrinsic Value | $ 0
Total unrecognized stock option expense remaining (in thousands) | $ $ 903
Weighted-average years expected to be recognized over (in years) 1 year 6 months