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STOCK PLANS - Stock Option Activity (Details) - Stock options - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Number of Options    
Outstanding at beginning of year (in shares) 0  
Granted (in shares) 20,000  
Outstanding at end of year (in shares) 20,000  
Exercisable at end of year (in shares) 0  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]    
Outstanding at beginning of year (in shares) $ 4.01 $ 0.00
Granted (in usd per share) 4.01  
Exercisable at end of year (in shares) 0.00  
Weighted-Average Exercise Price    
Outstanding at beginning of year (in usd per share) 0.00  
Granted (in usd per share) 22.59  
Outstanding at end of year (in usd per share) 22.59  
Exercisable at end of year (in usd per share) $ 0.00  
Weighted- Average Remaining Contractual Life (years)    
Outstanding at end of year (in years) 4 years 7 months 5 days  
Exercisable at end of year (in years) 0 years  
Aggregate Intrinsic Value    
Outstanding at end of year $ 0.00  
Exercisable at end of year $ 0.00