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Share-Based Compensation (Narrative) (Details) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended
May 11, 2017
Mar. 31, 2023
Mar. 31, 2022
May 05, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock units   945    
Share-based compensation expense   $ 237 $ 552  
Employees and Directors [Member] | 2017 Long-Term Incentive 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 3,300     1,500
Employees and Directors [Member] | 2007 Long-Term Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Underlying equity awards issued 1,700