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Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Net loss $ (12,271) $ (35,527)
Other comprehensive loss:    
Change in liability of pension plans (197) (71)
Total comprehensive loss $ (12,468) $ (35,598)