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Stockholders' Equity and Earnings per Share (Tables)
 6 Months Ended
Jun. 30, 2018
Stockholders' Equity and Earnings per Share [Abstract]  
Amounts Reclassified Out of Accumulated Other Comprehensive Loss, by Category
The following table presents information on amounts reclassified out of accumulated other comprehensive loss, by category, during the periods indicated:

 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
 
2018
 
2017
 
2018
 
2017
 
Affected Line Item on
Consolidated Statements of Income
 
(in thousands)
  
Available-for-sale securities
             
Realized gains on sales of securities
 
$
40
  
$
87
  
$
120
  
$
87
 
Gain on sale of available-for-sale securities, net
Tax effect
  
8
   
30
   
25
   
30
 
Income tax expense
  
$
32
  
$
57
  
$
95
  
$
57
  
Changes in Accumulated Other Comprehensive Loss, by Category
The following tables present the changes in accumulated other comprehensive loss, by category, net of tax, for the periods indicated:

 
 
Unrealized Gains (Losses) on Available-for-Sale Securities
  
Defined Benefit Pension Plans
  
Accumulated Other Comprehensive Loss
 
  
(in thousands)
 
          
Three Months Ended June 30, 2018
         
Balance at beginning of period
 
$ 
(2,737
)
 
$
-
  
$ 
(2,737
)
Net other comprehensive loss
  
(152
)
  
-
   
(152
)
Balance at end of period
 
$ 
(2,889
)
 
$
-
  
$ 
(2,889
)
             
             
Three Months Ended June 30, 2017
            
Balance at beginning of period
 
$ 
(1,311
)
 
$ 
(2,469
)
 
$ 
(3,780
)
Net other comprehensive income
  
1,036
   
-
   
1,036
 
Balance at end of period
 
$ 
(275
)
 
$ 
(2,469
)
 
$ 
(2,744
)
 
 
 
Unrealized Gains (Losses) on Available-for-Sale Securities
  
Defined Benefit Pension Plans
  
Accumulated Other Comprehensive Loss
 
  
(in thousands)
 
          
Six Months Ended June 30, 2018
         
Balance at beginning of period
 
$ 
(707
)
 
$
-
  
$ 
(707
)
Net other comprehensive loss
  
(1,966
)
  
-
   
(1,966
)
Reclassification of the income tax effects of the Tax Cuts and Jobs Act from AOCI
  
(139
)
  
-
   
(139
)
Reclassification of net unrealized gains on equity securities from AOCI per ASU 2016-01
  
(77
)
  
-
   
(77
)
Balance at end of period
 
$ 
(2,889
)
 
$
-
  
$ 
(2,889
)
             
             
Six Months Ended June 30, 2017
            
Balance at beginning of period
 
$ 
(1,739
)
 
$ 
(2,469
)
 
$ 
(4,208
)
Net other comprehensive income
  
1,464
   
-
   
1,464
 
Balance at end of period
 
$ 
(275
)
 
$ 
(2,469
)
 
$ 
(2,744
)
Components of Other Comprehensive Income, Net of Tax on Pre-Tax and After-Tax
The following tables present the change in each component of accumulated other comprehensive loss on a pre-tax and after-tax basis for the periods indicated.

 
Three Months Ended June 30, 2018
 
 
Pretax
 
Tax
 
Net-of-Tax
 
 
(in thousands)
 
       
Unrealized losses on available-for-sale securities:
         
Unrealized holding losses arising during the period
 
$
(152
)
 
$
(32
)
 
$
(120
)
Reclassification adjustment for gains recognized in income
  
(40
)
  
(8
)
  
(32
)
             
Total change in accumulated other comprehensive loss, net
 
$
(192
)
 
$
(40
)
 
$
(152
)

 
Three Months Ended June 30, 2017
 
 
Pretax
 
Tax
 
Net-of-Tax
 
 
(in thousands)
 
       
Unrealized gains on available-for-sale securities:
         
Unrealized holding gains arising during the period
 
$
1,657
  
$
564
  
$
1,093
 
Reclassification adjustment for gains recognized in income
  
(87
)
  
(30
)
  
(57
)
             
Total change in accumulated other comprehensive loss, net
 
$
1,570
  
$
534
  
$
1,036
 
 
 
Six Months Ended June 30, 2018
 
 
Pretax
 
Tax
 
Net-of-Tax
 
 
(in thousands)
 
       
Unrealized losses on available-for-sale securities:
         
Unrealized holding losses arising during the period
 
$
(2,368
)
 
$
(497
)
 
$
(1,871
)
Reclassification adjustment for gains recognized in income
  
(120
)
  
(25
)
  
(95
)
             
Total change in accumulated other comprehensive loss, net
 
$
(2,488
)
 
$
(522
)
 
$
(1,966
)

 
Six Months Ended June 30, 2017
 
 
Pretax
 
Tax
 
Net-of-Tax
 
 
(in thousands)
 
       
Unrealized gains on available-for-sale securities:
         
Unrealized holding gains arising during the period
 
$
2,305
  
$
784
  
$
1,521
 
Reclassification adjustment for gains recognized in income
  
(87
)
  
(30
)
  
(57
)
             
Total change in accumulated other comprehensive loss, net
 
$
2,218
  
$
754
  
$
1,464
 
Computation of Earnings Per Share
The following is a reconciliation of the denominators of the basic and diluted EPS computations for the three and six months ended June 30, 2018 and 2017:

  
Net Income Available to Common Shareholders (Numerator)
  
Weighted Average Common Shares (Denominator)
  
Per Share Amount
 
  
(in thousands except per share data)
 
Three Months Ended June 30, 2018
         
Net income, basic
 
$
992
   
5,177
  
$
0.19
 
Potentially dilutive common shares - stock options
  
-
   
-
   
-
 
Potentially dilutive common shares - employee stock purchase program
  
-
   
-
   
-
 
Diluted
 
$
992
   
5,177
  
$
0.19
 
             
Three Months Ended June 30, 2017
            
Net income, basic
 
$
1,161
   
4,984
  
$
0.23
 
Potentially dilutive common shares - stock options
  
-
   
13
   
-
 
Potentially dilutive common shares - employee stock purchase program
  
-
   
-
   
-
 
Diluted
 
$
1,161
   
4,997
  
$
0.23
 
             
Six Months Ended June 30, 2018
            
Net income, basic
 
$
1,934
   
5,099
  
$
0.38
 
Potentially dilutive common shares - stock options
  
-
   
-
   
-
 
Potentially dilutive common shares - employee stock purchase program
  
-
   
-
   
-
 
Diluted
 
$
1,934
   
5,099
  
$
0.38
 
             
Six Months Ended June 30, 2017
            
Net income, basic
 
$
2,103
   
4,981
  
$
0.42
 
Potentially dilutive common shares - stock options
  
-
   
13
   
-
 
Potentially dilutive common shares - employee stock purchase program
  
-
   
-
   
-
 
Diluted
 
$
2,103
   
4,994
  
$
0.42