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Share-Based Compensation (Narrative) (Details)
12 Months Ended
Oct. 27, 2014
shares
Dec. 31, 2018
USD ($)
shares
Dec. 31, 2017
USD ($)
employee
non-employee
$ / shares
shares
Dec. 31, 2016
USD ($)
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Maximum amount to be paid to individual pursuant to cash bonus award | $     $ 2,000,000  
Shares Paid for Tax Withholding for Share Based Compensation   (39,228) (63,057)  
Shares granted     0  
Per share exercise price | $ / shares     $ 7.49 $ 7.49
Expiration period (in years) 10 years      
Payments Related to Tax Withholding for Share-based Compensation | $   $ (412,000) $ (586,000) $ 0
Stock Option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Service period     5 years  
Stock Issued During Period, Value, Stock Options Exercised | $     $ 0  
2014 Equity Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of awards granted after expiration date     0  
Number of shares authorized and reserved for issuance 2,350,956      
Number of shares available for grant     1,816,768  
Shares granted     0  
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unamortized share-based compensation expense | $   $ 200,000    
Unamortized share-based compensation expense, weighted average period of recognition   5 months    
Equity Option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unamortized share-based compensation expense | $   $ 200,000    
Unamortized share-based compensation expense, weighted average period of recognition   10 months    
Executive Officers | 2014 Equity Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number eligible for awards | employee     4  
Non-employee Directors        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of amount of retainer fee deferred (up to)     100.00%  
Non-employee Directors | 2014 Equity Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number eligible for awards | non-employee     6  
Officer [Member] | Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of awards vested in period     100.00%  
Common Stock | Chief Executive Officer | Stock Option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 5 years