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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2015
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]  
Computation of earnings per share
The following table sets forth the computation of earnings per share.  Earnings per share calculations give retroactive effect to stock dividends declared by the Company.
 
 
2015
2014
2013
Basic earnings per share computation:
     
Net income applicable to common stock
$11,626,000
$13,385,000
$13,375,000
Weighted average common shares outstanding
                  3,031,282
                  3,038,298
          3,055,034
Earnings per share - basic
$3.84
$4.41
$4.38
       
Diluted earnings per share computation:
     
Net income applicable to common stock
$11,626,000
$13,385,000
$13,375,000
Weighted average common shares outstanding for basic earnings per share
                  3,031,282
                  3,038,298
          3,055,034
Add: Dilutive effects of restricted stock
                         1,360
                         1,295
                 1,170
Weighted average common shares outstanding for dilutive earnings per share
                  3,032,642
                  3,039,593
          3,056,204
Earnings per share - dilutive
$3.83
$4.40
$4.38