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Schedule of Stock-based Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total $ 168 $ 25 $ 222 $ 80
Share-based Payment Arrangement, Option [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total 42 24 96 77
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total $ 126 $ 1 $ 126 $ 3