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STOCK COMPENSATION - NONVESTED SHARES (Details) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
2005 Restricted Stock Grant Plan      
Additional disclosures      
Period over which cost is expected to be recognized 3 months    
2005 Restricted Stock Grant Plan | Restricted stock      
Stock Based Compensation      
Number of shares authorized for issuance 100,000    
Shares available for issuance 0    
Shares      
Nonvested at the beginning of the period (in shares) 5,924    
Granted (in shares) 0   0
Vested (in shares) (4,254)    
Forfeited (in shares) (64) (178)  
Nonvested at the end of the period (in shares) 1,606   5,924
Weighted-Average Grant-Date Fair Value      
Nonvested shares, balance at the beginning of the period (in dollars) $ 77,404    
Vested (in dollars) (54,566)    
Forfeited (in dollars) (876)    
Nonvested shares, balance at the end of the period (in dollars) $ 21,962   $ 77,404
Fair Value Per Share      
Nonvested shares, balance at the beginning of the period (in dollars per share) $ 13.07    
Vested (in dollars per share) 12.83    
Forfeited (in dollars per share) 13.69    
Nonvested shares, balance at the end of the period (in dollars per share) $ 13.67   $ 13.07
2009 Stock Award Plan      
Stock Based Compensation      
Number of shares authorized for issuance 300,000    
Shares available for issuance 230,732    
Shares      
Nonvested at the beginning of the period (in shares) 25,778    
Granted (in shares) 23,380 11,440  
Vested (in shares) (9,242)    
Forfeited (in shares) (1,090) (816)  
Nonvested at the end of the period (in shares) 38,826   25,778
Weighted-Average Grant-Date Fair Value      
Nonvested shares, balance at the beginning of the period (in dollars) $ 482,213    
Granted (in dollars) 549,430    
Vested (in dollars) (175,749)    
Forfeited (in dollars) (22,942)    
Nonvested shares, balance at the end of the period (in dollars) $ 832,953   $ 482,213
Fair Value Per Share      
Nonvested shares, balance at the beginning of the period (in dollars per share) $ 18.71    
Granted (in dollars per share) 23.50    
Vested (in dollars per share) 19.02    
Forfeited (in dollars per share) 21.05    
Nonvested shares, balance at the end of the period (in dollars per share) $ 21.45   $ 18.71
Additional disclosures      
Period over which cost is expected to be recognized 3 years 6 months    
2019 Stock Award Plan      
Stock Based Compensation      
Number of shares authorized for issuance 300,000    
Shares      
Granted (in shares) 0