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Stock-Based Compensation (Narrative) (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
USD ($)
shares
Mar. 31, 2017
shares
Jun. 30, 2016
USD ($)
shares
Mar. 31, 2016
shares
Jun. 30, 2017
USD ($)
ShareBasedCompensationPlan
shares
Jun. 30, 2016
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of stock-based compensation plans | ShareBasedCompensationPlan         3  
Compensation cost | $ $ 62   $ 30   $ 122 $ 59
Total income tax effect recognized for share-based compensation arrangements | $ $ 21   $ 9   $ 42 $ 17
Shares available to be issued 1,500,000       1,500,000  
Shares expired         300 0
Shares cancelled or forfeited         0 18,200
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 546,425       546,425  
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 | $ $ 511   $ 214   $ 511 $ 214
Shares issued   0   0    
Shares, Forfeited         6,333 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