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Stock-Based Compensation (Narrative) (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
USD ($)
shares
Sep. 30, 2016
USD ($)
shares
Sep. 30, 2017
USD ($)
ShareBasedCompensationPlan
shares
Sep. 30, 2016
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of stock-based compensation plans | ShareBasedCompensationPlan     3  
Compensation cost | $ $ 59 $ 33 $ 181 $ 92
Total income tax effect recognized for share-based compensation arrangements | $ $ 20 $ 9 $ 62 $ 26
Shares available to be issued 1,500,000   1,500,000  
Shares expired     300 0
Shares cancelled or forfeited     3,000 23,950
Nonvested stock options, expected to vest    
2003 Equity Compensation Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of Shares Authorized 100,000   100,000  
2009 Equity Compensation Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 557,425   557,425  
Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration period     10 years  
Shares Granted 0 0 0 0
Stock Options Exercised 0 0 0 0
Stock Options [Member] | 1999 Stock-Based Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of Shares Authorized 38,778   38,778  
Stock Options [Member] | Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting periods     1 year  
Stock Options [Member] | Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting periods     3 years  
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost | $ $ 439 $ 191 $ 439 $ 191
Shares issued 0 0 0 0
Shares, Forfeited     14,333 0
Shares, Vested     0 0
Restricted Stock [Member] | 1999 Stock-Based Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of Shares Authorized 15,511   15,511  
Restricted Stock [Member] | 2003 Equity Compensation Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of Shares Authorized 30,000   30,000  
Restricted Stock [Member] | 2009 Equity Compensation Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of Shares Authorized 200,000   200,000  
Restricted Stock [Member] | Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting periods     1 year  
Restricted Stock [Member] | Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting periods     3 years