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Stock-Based Compensation (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation expense $ 91 $ 133 $ 167 $ 238  
Unrecognized stock compensation expense $ 366   $ 366   $ 430
Maximum [Member] | Restricted Stock and Units [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Employee benefit plan vesting period     5 years    
Minimum [Member] | Restricted Stock and Units [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Employee benefit plan vesting period     3 years