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Loss per Share - Outstanding Options and Warrants (Details) - shares
shares in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Employee Options        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 4,466 3,653 4,466 3,653
Warrants        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 150 39 150 39