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Stock-Based Compensation (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Restricted Stock [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Remaining requisite service period     23 months    
Unearned compensation $ 1,132   $ 1,132    
Time-Vested Stock Options [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unearned compensation related to options 1,287   $ 1,287    
Remaining service period     31 months    
Stock Appreciation Rights (SARs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award Vesting Period     3 years   3 years
Award contractual term     10 years   10 years
Stock-based compensation 127 $ 48 $ 2,679 $ 69  
Estimated fair value 10,650   $ 10,650    
Granted (shares)     1,735,500    
Stock appreciation award vesting rights     Vesting of the 2021 cash settled stock appreciation rights is contingent upon the achievement of a thirty-day trailing average fair market value of a share of the Company’s common stock of 133.3% ($3.17)    
Exercise price     $ 2.38    
Stock awards, Grants in Period, Weighted Average Grant Date Fair Value     $ 1.74    
Including Liability Based Awards [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation $ 300 $ (156) $ 2,961 $ 94  
Certain Employees [Member] | Stock Appreciation Rights (SARs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted         1,139,464