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Stock-based Compensation (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized compensation cost $ 3.4  
Weighted average period expected to be recognized 2 years  
RSUs [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of RSUs outstanding 249,726 207,359
RSUs shares expected to vest 91,891