Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFITS AND STOCK BASED COMPENSATION (Summary of Stock Option Activity) (Details)

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EMPLOYEE BENEFITS AND STOCK BASED COMPENSATION (Summary of Stock Option Activity) (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Stock Options (shares)      
Number of Stock Options, Outstanding beginning balance 121,743    
Number of Stock Options, Granted 0    
Number of Stock Options, Exercised (72,743) (63,476) (88,409)
Number of Stock Options, Forfeited 0    
Number of Stock Options, Expired (1,415)    
Number of Stock Options, Outstanding ending balance 47,585 121,743  
Number of Stock Options, Exercisable 47,585    
Weighted Average Exercise Price      
Weighted Average Exercise Price, Outstanding, beginning balance (in dollars per share) $ 13.93    
Weighted Average Exercise Price, Granted (in dollars per share) 0.00    
Weighted Average Exercise Price, Exercised (in dollars per share) 13.51    
Weighted Average Exercise Price, Forfeited (in dollars per share) 0.00    
Weighted Average Exercise Price, Expired (in dollars per share) 18.10    
Weighted Average Exercise Price, Exercisable (in dollars per share) 14.44    
Weighted Average Exercise Price, Outstanding, beginning balance (in dollars per share) $ 14.44 $ 13.93  
Weighted Average Remaining Contractual Life, Outstanding 2 years 6 months 14 days    
Weighted Average Remaining Contractual Life, Exercisable 2 years 6 months 14 days    
Aggregate Intrinsic Value, Outstanding $ 656,238 $ 2,700,000 $ 3,900,000
Aggregate Intrinsic Value, Exercisable $ 656,238