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Acquisition - Summary of Proforma Information (Details) - DSS Acquisition
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
$ / shares
Business Acquisition [Line Items]  
Pro forma revenue from continuing operations $ 34,463
Pro forma net loss from continuing operations $ (2,590)
Per share data:  
Basic and diluted loss from continuing operations | $ / shares $ (0.17)