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OTHER COMPREHENSIVE INCOME (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Components of accumulated other comprehensive loss, net of tax [Abstract]      
Net unrealized gain on securities available for sale $ (1,232) $ (340)  
Tax effect 259 71  
Net -of-tax amount (973) (269)  
Unrecognized pension costs (3,731) (3,961)  
Tax effect 783 832  
Net -of-tax amount (2,948) (3,129)  
Total accumulated other comprehensive income (3,921) (3,398)  
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance 129,011 123,268 $ 119,760
Change in Accounting policy for equity securities 1 0  
Other comprehensive income (loss) before reclassifications (net of tax) (686) (912) (1,133)
Amounts reclassified from accumulated other comprehensive income (loss) (net of tax) 162 (535) (23)
Net other comprehensive loss (524) (1,447) (1,156)
Change in other comprehensive income due to change in the federal tax rate   0  
Balance 139,229 129,011 123,268
Accumulated Other Comprehensive Income (Loss) [Member]      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance (3,398) (1,392) (236)
Change in Accounting policy for equity securities   1  
Net other comprehensive loss (524) (1,447) (1,156)
Change in other comprehensive income due to change in the federal tax rate   (559)  
Balance (3,921) (3,398) (1,392)
Unrealized Gain (Loss) on Available For Sale Securities [Member]      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance [1] (269) 1,306 2,204
Change in Accounting policy for equity securities [1] 1    
Other comprehensive income (loss) before reclassifications (net of tax) [1] (720) (847) (730)
Amounts reclassified from accumulated other comprehensive income (loss) (net of tax) [1] 15 (683) (168)
Net other comprehensive loss [1] (705) (1,530) (898)
Change in other comprehensive income due to change in the federal tax rate [1]   (45)  
Balance [1] (973) (269) 1,306
Defined Benefit Pension Items [Member]      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance [1] (3,129) (2,698) (2,440)
Change in Accounting policy for equity securities [1] 0    
Other comprehensive income (loss) before reclassifications (net of tax) [1] 34 (65) (403)
Amounts reclassified from accumulated other comprehensive income (loss) (net of tax) [1] 147 148 145
Net other comprehensive loss [1] 181 83 (258)
Change in other comprehensive income due to change in the federal tax rate [1]   (514)  
Balance [1] $ (2,948) $ (3,129) $ (2,698)
[1] Amounts in parentheses indicate debits to stockholders equity