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Consolidated Statement of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Treasury Stock [Member]
Total
Balance at Dec. 31, 2016 $ 3,704 $ 42,250 $ 91,278 $ (1,392) $ (12,572) $ 123,268
Balance (in shares) at Dec. 31, 2016 3,704,375          
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income     13,025     13,025
Net other comprehensive income (loss)       (1,447)   (1,447)
Stock dividend $ 166 8,857        
Stock dividend     (9,023)     0
Stock dividend (in shares) 165,564          
Purchase of treasury stock         (979) (979)
Restricted stock, executive and Board of Director awards   (224)     296 72
Restricted stock vesting   206       206
Sale of treasury stock   0     43 43
Forfeited restricted stock   2     (2) 0
Change in other comprehensive income due to change in the federal tax rate     559 (559)   0
Cash dividend reinvestment paid from treasury stock   17 (680)   663 0
Cash dividends     (5,177)     (5,177)
Balance at Dec. 31, 2017 $ 3,870 51,108 89,982 (3,398) (12,551) 129,011
Balance (in shares) at Dec. 31, 2017 3,869,939          
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Change in Accounting policy for equity securities     (1) 1   0
Net income     18,034     18,034
Net other comprehensive income (loss)       (524)   (524)
Stock dividend $ 34 2,108        
Stock dividend     (2,142)     0
Stock dividend (in shares) 34,273          
Purchase of treasury stock         (1,175) (1,175)
Restricted stock, executive and Board of Director awards   (364)     116 (248)
Restricted stock vesting   247       247
Cash dividend reinvestment paid from treasury stock   0 (30)   30 0
Cash dividends     (6,116)     (6,116)
Balance at Dec. 31, 2018 $ 3,904 53,099 99,727 (3,921) (13,580) 139,229
Balance (in shares) at Dec. 31, 2018 3,904,212          
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Change in Accounting policy for equity securities           1
Net income     19,490     19,490
Net other comprehensive income (loss)       3,292   3,292
Stock dividend $ 35 2,067        
Stock dividend     (2,102)     0
Stock dividend (in shares) 34,456          
Purchase of treasury stock         (1,291) (1,291)
Restricted stock, executive and Board of Director awards   (374)     489 115
Restricted stock vesting   254       254
Forfeited restricted stock   43     (43) 0
Cash dividends     (6,315)     (6,315)
Balance at Dec. 31, 2019 $ 3,939 $ 55,089 $ 110,800 $ (629) $ (14,425) $ 154,774
Balance (in shares) at Dec. 31, 2019 3,938,668