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Stock-Based Compensation (Narrative) (Details)
$ in Thousands
12 Months Ended
Aug. 20, 2018
Dec. 31, 2018
USD ($)
ShareBasedCompensationPlan
shares
Dec. 31, 2017
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of stock-based compensation plans | ShareBasedCompensationPlan   2  
Compensation cost | $   $ 376 $ 246
Total income tax (expense) benefit | $   $ 79 $ 84
Reverse stock split ratio 5.5    
Shares granted   0 0
Shares vested   38,237  
2003 Equity Compensation Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Shares Authorized   18,181  
2009 Equity Compensation Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares available to be issued   272,727  
Shares remaining available   33,837  
Stock Options [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting periods exercisable from date of grant   10 years  
Shares cancelled, forfeited or expired   1,667  
Stock Options [Member] | 2009 Equity Compensation Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Shares Authorized   36,363  
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]      
Shares available to be issued   31,827 39,181
Unrecognized compensation cost | $   $ 812 $ 918
Restricted Stock [Member] | 2003 Equity Compensation Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Shares Authorized   5,454  
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