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Stock Based Compensation, Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Period options granted to date vest ratably     5 years  
Period options granted expires after date of grant     10 years  
Compensation expense relating to restricted stock     $ 63 $ 45
Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Aggregate intrinsic value for option outstanding $ 174 $ 320 174 320
Aggregate intrinsic value of options exercisable 174 314 174 314
Total expense related to options included in salaries and wages 0 1 1 2
Tax benefit from compensation expense 0 0 0 1
Restricted Stock Awards [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense relating to restricted stock 7 23 63 45
Tax benefit from compensation expense 3 $ 7 22 $ 15
Restricted stock compensation costs not yet recognized $ 96   $ 96  
Compensation costs not yet recognized, period for recognition     4 years 4 months  
Ownership Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized for issuance (in shares) 200,000   200,000  
2015 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized for issuance (in shares) 450,000   450,000