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Stock-Based Compensation (Narrative) (Details)
$ in Thousands
3 Months Ended
Aug. 20, 2018
Mar. 31, 2019
USD ($)
ShareBasedCompensationPlan
shares
Mar. 31, 2018
USD ($)
shares
May 16, 2013
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of stock-based compensation plans | ShareBasedCompensationPlan   2    
Compensation cost | $   $ 116 $ 96  
Total income tax effect recognized for share-based compensation arrangements | $   $ 24 $ 20  
Reverse stock split ratio 5.5      
Shares available to be issued       272,727
Shares expired   200  
Shares cancelled or forfeited      
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]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant   0    
Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration period   10 years    
Shares Granted   0 0  
Stock Options Exercised   0 0  
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 | $   $ 1,125 $ 739  
Nonvested shares, granted   33,788 0  
Shares, Forfeited   393 6,848  
Shares, Vested    
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] | 2009 Equity Compensation Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of Shares Authorized   36,363    
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