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
Feb. 01, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Stock Options (shares)        
Number of Stock Options, Outstanding beginning balance   47,585    
Number of Stock Options, Exercised   (56,619) (72,743) (63,476)
Number of Stock Options, Forfeited   (9,447)    
Number of Stock Options, Expired   (8,060)    
Number of Stock Options, Outstanding ending balance   422,138 47,585  
Number of Stock Options, Exercisable   368,146    
Weighted Average Exercise Price        
Weighted Average Exercise Price, Outstanding, beginning balance (in dollars per share)   $ 14.44    
Weighted Average Exercise Price, Exercised (in dollars per share)   24.48    
Weighted Average Exercise Price, Forfeited (in dollars per share)   31.94    
Weighted Average Exercise Price, Expired (in dollars per share)   36.78    
Weighted Average Exercise Price, Outstanding, beginning balance (in dollars per share)   32.48 $ 14.44  
Weighted Average Exercise Price, Exercisable (in dollars per share)   $ 32.57    
Weighted Average Remaining Contractual Life, Outstanding   2 years 6 months 18 days    
Weighted Average Remaining Contractual Life, Exercisable   2 years 3 months 29 days    
Aggregate Intrinsic Value, Outstanding   $ 2,313,739 $ 656,000 $ 2,700,000
Aggregate Intrinsic Value, Exercisable   $ 2,006,915    
Access National Bank        
Stock Options (shares)        
Options assumed in the Access acquisition 448,679      
Weighted Average Exercise Price        
Weighted average exercise price, Options assumed in the Access acquisition $ 33.45